diff --git a/embassy-usb-logger/Cargo.toml b/embassy-usb-logger/Cargo.toml
index 02d0ed8e5..48b8bbcc6 100644
--- a/embassy-usb-logger/Cargo.toml
+++ b/embassy-usb-logger/Cargo.toml
@@ -8,9 +8,6 @@ src_base = "https://github.com/embassy-rs/embassy/blob/embassy-usb-logger-v$VERS
 src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-usb-logger/src/"
 target = "thumbv7em-none-eabi"
 
-[features]
-msos-descriptor = ["embassy-usb/msos-descriptor"]
-
 [dependencies]
 embassy-usb = { version = "0.1.0", path = "../embassy-usb" }
 embassy-sync = { version = "0.4.0", path = "../embassy-sync" }
diff --git a/embassy-usb-logger/src/lib.rs b/embassy-usb-logger/src/lib.rs
index 95fc0a7ed..45d780bf8 100644
--- a/embassy-usb-logger/src/lib.rs
+++ b/embassy-usb-logger/src/lib.rs
@@ -19,7 +19,6 @@ pub struct LoggerState<'d> {
     device_descriptor: [u8; 32],
     config_descriptor: [u8; 128],
     bos_descriptor: [u8; 16],
-    #[cfg(feature = "msos-descriptor")]
     msos_descriptor: [u8; 256],
     control_buf: [u8; 64],
 }
@@ -32,7 +31,6 @@ impl<'d> LoggerState<'d> {
             device_descriptor: [0; 32],
             config_descriptor: [0; 128],
             bos_descriptor: [0; 16],
-            #[cfg(feature = "msos-descriptor")]
             msos_descriptor: [0; 256],
             control_buf: [0; 64],
         }
@@ -77,7 +75,6 @@ impl<const N: usize> UsbLogger<N> {
             &mut state.device_descriptor,
             &mut state.config_descriptor,
             &mut state.bos_descriptor,
-            #[cfg(feature = "msos-descriptor")]
             &mut state.msos_descriptor,
             &mut state.control_buf,
         );
diff --git a/embassy-usb/Cargo.toml b/embassy-usb/Cargo.toml
index d820a2d0b..5f64b7212 100644
--- a/embassy-usb/Cargo.toml
+++ b/embassy-usb/Cargo.toml
@@ -13,7 +13,6 @@ target = "thumbv7em-none-eabi"
 [features]
 defmt = ["dep:defmt", "embassy-usb-driver/defmt"]
 usbd-hid = ["dep:usbd-hid", "dep:ssmarshal"]
-msos-descriptor = []
 default = ["usbd-hid"]
 
 # BEGIN AUTOGENERATED CONFIG FEATURES
diff --git a/embassy-usb/src/builder.rs b/embassy-usb/src/builder.rs
index b4ddccd71..c4705d041 100644
--- a/embassy-usb/src/builder.rs
+++ b/embassy-usb/src/builder.rs
@@ -3,7 +3,6 @@ use heapless::Vec;
 use crate::config::MAX_HANDLER_COUNT;
 use crate::descriptor::{BosWriter, DescriptorWriter};
 use crate::driver::{Driver, Endpoint, EndpointType};
-#[cfg(feature = "msos-descriptor")]
 use crate::msos::{DeviceLevelDescriptor, FunctionLevelDescriptor, MsOsDescriptorWriter};
 use crate::types::{InterfaceNumber, StringIndex};
 use crate::{Handler, Interface, UsbDevice, MAX_INTERFACE_COUNT, STRING_INDEX_CUSTOM_START};
@@ -133,7 +132,6 @@ pub struct Builder<'d, D: Driver<'d>> {
     config_descriptor: DescriptorWriter<'d>,
     bos_descriptor: BosWriter<'d>,
 
-    #[cfg(feature = "msos-descriptor")]
     msos_descriptor: MsOsDescriptorWriter<'d>,
 }
 
@@ -149,7 +147,7 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
         device_descriptor_buf: &'d mut [u8],
         config_descriptor_buf: &'d mut [u8],
         bos_descriptor_buf: &'d mut [u8],
-        #[cfg(feature = "msos-descriptor")] msos_descriptor_buf: &'d mut [u8],
+        msos_descriptor_buf: &'d mut [u8],
         control_buf: &'d mut [u8],
     ) -> Self {
         // Magic values specified in USB-IF ECN on IADs.
@@ -189,14 +187,12 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
             config_descriptor,
             bos_descriptor,
 
-            #[cfg(feature = "msos-descriptor")]
             msos_descriptor: MsOsDescriptorWriter::new(msos_descriptor_buf),
         }
     }
 
     /// Creates the [`UsbDevice`] instance with the configuration in this builder.
     pub fn build(mut self) -> UsbDevice<'d, D> {
-        #[cfg(feature = "msos-descriptor")]
         let msos_descriptor = self.msos_descriptor.build(&mut self.bos_descriptor);
 
         self.config_descriptor.end_configuration();
@@ -206,7 +202,6 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
         info!("USB: device_descriptor used: {}", self.device_descriptor.position());
         info!("USB: config_descriptor used: {}", self.config_descriptor.position());
         info!("USB: bos_descriptor used: {}", self.bos_descriptor.writer.position());
-        #[cfg(feature = "msos-descriptor")]
         info!("USB: msos_descriptor used: {}", msos_descriptor.len());
         info!("USB: control_buf size: {}", self.control_buf.len());
 
@@ -217,10 +212,9 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
             self.device_descriptor.into_buf(),
             self.config_descriptor.into_buf(),
             self.bos_descriptor.writer.into_buf(),
+            msos_descriptor,
             self.interfaces,
             self.control_buf,
-            #[cfg(feature = "msos-descriptor")]
-            msos_descriptor,
         )
     }
 
@@ -251,7 +245,6 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
             builder: self,
             iface_count_index,
 
-            #[cfg(feature = "msos-descriptor")]
             first_interface,
         }
     }
@@ -275,7 +268,6 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
         StringIndex::new(index)
     }
 
-    #[cfg(feature = "msos-descriptor")]
     /// Add an MS OS 2.0 Descriptor Set.
     ///
     /// Panics if called more than once.
@@ -283,13 +275,11 @@ impl<'d, D: Driver<'d>> Builder<'d, D> {
         self.msos_descriptor.header(windows_version, vendor_code);
     }
 
-    #[cfg(feature = "msos-descriptor")]
     /// Add an MS OS 2.0 Device Level Feature Descriptor.
     pub fn msos_feature<T: DeviceLevelDescriptor>(&mut self, desc: T) {
         self.msos_descriptor.device_feature(desc);
     }
 
-    #[cfg(feature = "msos-descriptor")]
     /// Gets the underlying [`MsOsDescriptorWriter`] to allow adding subsets and features for classes that
     /// do not add their own.
     pub fn msos_writer(&mut self) -> &mut MsOsDescriptorWriter<'d> {
@@ -306,13 +296,11 @@ pub struct FunctionBuilder<'a, 'd, D: Driver<'d>> {
     builder: &'a mut Builder<'d, D>,
     iface_count_index: Option<usize>,
 
-    #[cfg(feature = "msos-descriptor")]
     first_interface: InterfaceNumber,
 }
 
 impl<'a, 'd, D: Driver<'d>> Drop for FunctionBuilder<'a, 'd, D> {
     fn drop(&mut self) {
-        #[cfg(feature = "msos-descriptor")]
         self.builder.msos_descriptor.end_function();
     }
 }
@@ -344,7 +332,6 @@ impl<'a, 'd, D: Driver<'d>> FunctionBuilder<'a, 'd, D> {
         }
     }
 
-    #[cfg(feature = "msos-descriptor")]
     /// Add an MS OS 2.0 Function Level Feature Descriptor.
     pub fn msos_feature<T: FunctionLevelDescriptor>(&mut self, desc: T) {
         if !self.builder.msos_descriptor.is_in_config_subset() {
@@ -355,7 +342,6 @@ impl<'a, 'd, D: Driver<'d>> FunctionBuilder<'a, 'd, D> {
             self.builder.msos_descriptor.function(self.first_interface);
         }
 
-        #[cfg(feature = "msos-descriptor")]
         self.builder.msos_descriptor.function_feature(desc);
     }
 }
diff --git a/embassy-usb/src/lib.rs b/embassy-usb/src/lib.rs
index 9fc1e3320..241e33a78 100644
--- a/embassy-usb/src/lib.rs
+++ b/embassy-usb/src/lib.rs
@@ -175,10 +175,7 @@ pub struct UsbBufferReport {
     /// Number of bos descriptor bytes used
     pub bos_descriptor_used: usize,
     /// Number of msos descriptor bytes used
-    ///
-    /// Will be `None` if the "msos-descriptor" feature is not active.
-    /// Otherwise will return Some(bytes).
-    pub msos_descriptor_used: Option<usize>,
+    pub msos_descriptor_used: usize,
     /// Size of the control buffer
     pub control_buffer_size: usize,
 }
@@ -197,6 +194,7 @@ struct Inner<'d, D: Driver<'d>> {
     device_descriptor: &'d [u8],
     config_descriptor: &'d [u8],
     bos_descriptor: &'d [u8],
+    msos_descriptor: crate::msos::MsOsDescriptorSet<'d>,
 
     device_state: UsbDeviceState,
     suspended: bool,
@@ -212,9 +210,6 @@ struct Inner<'d, D: Driver<'d>> {
 
     interfaces: Vec<Interface, MAX_INTERFACE_COUNT>,
     handlers: Vec<&'d mut dyn Handler, MAX_HANDLER_COUNT>,
-
-    #[cfg(feature = "msos-descriptor")]
-    msos_descriptor: crate::msos::MsOsDescriptorSet<'d>,
 }
 
 impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
@@ -225,9 +220,9 @@ impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
         device_descriptor: &'d [u8],
         config_descriptor: &'d [u8],
         bos_descriptor: &'d [u8],
+        msos_descriptor: crate::msos::MsOsDescriptorSet<'d>,
         interfaces: Vec<Interface, MAX_INTERFACE_COUNT>,
         control_buf: &'d mut [u8],
-        #[cfg(feature = "msos-descriptor")] msos_descriptor: crate::msos::MsOsDescriptorSet<'d>,
     ) -> UsbDevice<'d, D> {
         // Start the USB bus.
         // This prevent further allocation by consuming the driver.
@@ -242,6 +237,7 @@ impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
                 device_descriptor,
                 config_descriptor,
                 bos_descriptor,
+                msos_descriptor,
 
                 device_state: UsbDeviceState::Unpowered,
                 suspended: false,
@@ -251,8 +247,6 @@ impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
                 set_address_pending: false,
                 interfaces,
                 handlers,
-                #[cfg(feature = "msos-descriptor")]
-                msos_descriptor,
             },
         }
     }
@@ -261,16 +255,11 @@ impl<'d, D: Driver<'d>> UsbDevice<'d, D> {
     ///
     /// Useful for tuning buffer sizes for actual usage
     pub fn buffer_usage(&self) -> UsbBufferReport {
-        #[cfg(not(feature = "msos-descriptor"))]
-        let mdu = None;
-        #[cfg(feature = "msos-descriptor")]
-        let mdu = Some(self.inner.msos_descriptor.len());
-
         UsbBufferReport {
             device_descriptor_used: self.inner.device_descriptor.len(),
             config_descriptor_used: self.inner.config_descriptor.len(),
             bos_descriptor_used: self.inner.bos_descriptor.len(),
-            msos_descriptor_used: mdu,
+            msos_descriptor_used: self.inner.msos_descriptor.len(),
             control_buffer_size: self.control_buf.len(),
         }
     }
@@ -684,7 +673,7 @@ impl<'d, D: Driver<'d>> Inner<'d, D> {
                 }
                 _ => InResponse::Rejected,
             },
-            #[cfg(feature = "msos-descriptor")]
+
             (RequestType::Vendor, Recipient::Device) => {
                 if !self.msos_descriptor.is_empty()
                     && req.request == self.msos_descriptor.vendor_code()
diff --git a/embassy-usb/src/msos.rs b/embassy-usb/src/msos.rs
index 13d5d7c4b..3858c0f51 100644
--- a/embassy-usb/src/msos.rs
+++ b/embassy-usb/src/msos.rs
@@ -1,5 +1,3 @@
-#![cfg(feature = "msos-descriptor")]
-
 //! Microsoft OS Descriptors
 //!
 //! <https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-os-2-0-descriptors-specification>
diff --git a/examples/nrf52840/Cargo.toml b/examples/nrf52840/Cargo.toml
index f803adb03..7bf904ee0 100644
--- a/examples/nrf52840/Cargo.toml
+++ b/examples/nrf52840/Cargo.toml
@@ -34,7 +34,7 @@ embassy-executor = { version = "0.3.1", path = "../../embassy-executor", feature
 embassy-time = { version = "0.1.5", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 embassy-net = { version = "0.2.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet"], optional = true }
-embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt", "msos-descriptor",], optional = true }
+embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt"], optional = true }
 embedded-io = { version = "0.6.0", features = ["defmt-03"]  }
 embedded-io-async = { version = "0.6.0", optional = true, features = ["defmt-03"] }
 embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["time", "defmt"], optional = true }
diff --git a/examples/rp/Cargo.toml b/examples/rp/Cargo.toml
index 5ff505e86..fbe7acae1 100644
--- a/examples/rp/Cargo.toml
+++ b/examples/rp/Cargo.toml
@@ -11,11 +11,11 @@ embassy-sync = { version = "0.4.0", path = "../../embassy-sync", features = ["de
 embassy-executor = { version = "0.3.1", path = "../../embassy-executor", features = ["nightly", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.5", path = "../../embassy-time", features = ["nightly", "unstable-traits", "defmt", "defmt-timestamp-uptime"] }
 embassy-rp = { version = "0.1.0", path = "../../embassy-rp", features = ["defmt", "unstable-traits", "nightly", "unstable-pac", "time-driver", "critical-section-impl"] }
-embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt", "msos-descriptor"] }
+embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt"] }
 embassy-net = { version = "0.2.0", path = "../../embassy-net", features = ["defmt", "nightly", "tcp", "udp", "dhcpv4", "medium-ethernet"] }
 embassy-net-wiznet = { version = "0.1.0", path = "../../embassy-net-wiznet", features = ["defmt"] }
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
-embassy-usb-logger = { version = "0.1.0", path = "../../embassy-usb-logger", features = ["msos-descriptor"]}
+embassy-usb-logger = { version = "0.1.0", path = "../../embassy-usb-logger" }
 embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["time", "defmt"] }
 lora-phy = { version = "2" }
 lorawan-device = { version = "0.11.0", default-features = false, features = ["async", "external-lora-phy"] }
diff --git a/examples/rp/src/bin/pio_uart.rs b/examples/rp/src/bin/pio_uart.rs
index dca28d779..fb9d423ec 100644
--- a/examples/rp/src/bin/pio_uart.rs
+++ b/examples/rp/src/bin/pio_uart.rs
@@ -75,7 +75,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
-        &mut [],
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/rp/src/bin/usb_ethernet.rs b/examples/rp/src/bin/usb_ethernet.rs
index aea9e6481..cc63029fb 100644
--- a/examples/rp/src/bin/usb_ethernet.rs
+++ b/examples/rp/src/bin/usb_ethernet.rs
@@ -71,7 +71,7 @@ async fn main(spawner: Spawner) {
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
-        &mut make_static!([0; 0])[..],
+        &mut [], // no msos descriptors
         &mut make_static!([0; 128])[..],
     );
 
diff --git a/examples/rp/src/bin/usb_midi.rs b/examples/rp/src/bin/usb_midi.rs
index 3ba34c806..d5cdae319 100644
--- a/examples/rp/src/bin/usb_midi.rs
+++ b/examples/rp/src/bin/usb_midi.rs
@@ -58,7 +58,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
-        &mut [],
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/rp/src/bin/usb_serial.rs b/examples/rp/src/bin/usb_serial.rs
index 0d0317cda..30347d920 100644
--- a/examples/rp/src/bin/usb_serial.rs
+++ b/examples/rp/src/bin/usb_serial.rs
@@ -60,7 +60,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
-        &mut [],
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32f1/src/bin/usb_serial.rs b/examples/stm32f1/src/bin/usb_serial.rs
index 60eb5d0e4..31519555f 100644
--- a/examples/stm32f1/src/bin/usb_serial.rs
+++ b/examples/stm32f1/src/bin/usb_serial.rs
@@ -60,6 +60,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32f3/src/bin/usb_serial.rs b/examples/stm32f3/src/bin/usb_serial.rs
index a9537c77b..d5d068d62 100644
--- a/examples/stm32f3/src/bin/usb_serial.rs
+++ b/examples/stm32f3/src/bin/usb_serial.rs
@@ -57,6 +57,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32f4/Cargo.toml b/examples/stm32f4/Cargo.toml
index bcf373712..f81821904 100644
--- a/examples/stm32f4/Cargo.toml
+++ b/examples/stm32f4/Cargo.toml
@@ -10,7 +10,7 @@ embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["
 embassy-sync = { version = "0.4.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.3.1", path = "../../embassy-executor", features = ["nightly", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.5", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "tick-hz-32_768"] }
-embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt", "msos-descriptor"] }
+embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt" ] }
 embassy-net = { version = "0.2.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "nightly"] }
 
 defmt = "0.3"
diff --git a/examples/stm32f4/src/bin/usb_ethernet.rs b/examples/stm32f4/src/bin/usb_ethernet.rs
index 45dcf56af..34407b95a 100644
--- a/examples/stm32f4/src/bin/usb_ethernet.rs
+++ b/examples/stm32f4/src/bin/usb_ethernet.rs
@@ -94,7 +94,7 @@ async fn main(spawner: Spawner) {
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
-        &mut [],
+        &mut [], // no msos descriptors
         &mut make_static!([0; 128])[..],
     );
 
diff --git a/examples/stm32f4/src/bin/usb_serial.rs b/examples/stm32f4/src/bin/usb_serial.rs
index 3ab9a6c56..3e05b0ef2 100644
--- a/examples/stm32f4/src/bin/usb_serial.rs
+++ b/examples/stm32f4/src/bin/usb_serial.rs
@@ -77,7 +77,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
-        &mut [],
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32f7/src/bin/usb_serial.rs b/examples/stm32f7/src/bin/usb_serial.rs
index 2f832c234..6aca732b4 100644
--- a/examples/stm32f7/src/bin/usb_serial.rs
+++ b/examples/stm32f7/src/bin/usb_serial.rs
@@ -77,6 +77,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32g4/src/bin/usb_serial.rs b/examples/stm32g4/src/bin/usb_serial.rs
index 188988b14..378e7b988 100644
--- a/examples/stm32g4/src/bin/usb_serial.rs
+++ b/examples/stm32g4/src/bin/usb_serial.rs
@@ -75,6 +75,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32h5/src/bin/usb_serial.rs b/examples/stm32h5/src/bin/usb_serial.rs
index 13b218d00..7d45818af 100644
--- a/examples/stm32h5/src/bin/usb_serial.rs
+++ b/examples/stm32h5/src/bin/usb_serial.rs
@@ -82,6 +82,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32h7/src/bin/usb_serial.rs b/examples/stm32h7/src/bin/usb_serial.rs
index 648ff6eea..f80cf63ec 100644
--- a/examples/stm32h7/src/bin/usb_serial.rs
+++ b/examples/stm32h7/src/bin/usb_serial.rs
@@ -78,6 +78,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32l4/src/bin/usb_serial.rs b/examples/stm32l4/src/bin/usb_serial.rs
index d459245d5..d977398f5 100644
--- a/examples/stm32l4/src/bin/usb_serial.rs
+++ b/examples/stm32l4/src/bin/usb_serial.rs
@@ -72,6 +72,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32l5/src/bin/usb_ethernet.rs b/examples/stm32l5/src/bin/usb_ethernet.rs
index f5b3ca34c..923193abf 100644
--- a/examples/stm32l5/src/bin/usb_ethernet.rs
+++ b/examples/stm32l5/src/bin/usb_ethernet.rs
@@ -82,6 +82,7 @@ async fn main(spawner: Spawner) {
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
+        &mut [], // no msos descriptors
         &mut make_static!([0; 128])[..],
     );
 
diff --git a/examples/stm32l5/src/bin/usb_hid_mouse.rs b/examples/stm32l5/src/bin/usb_hid_mouse.rs
index bec3d5e4e..f64d0f34e 100644
--- a/examples/stm32l5/src/bin/usb_hid_mouse.rs
+++ b/examples/stm32l5/src/bin/usb_hid_mouse.rs
@@ -62,6 +62,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32l5/src/bin/usb_serial.rs b/examples/stm32l5/src/bin/usb_serial.rs
index ff1154f92..58a8898a6 100644
--- a/examples/stm32l5/src/bin/usb_serial.rs
+++ b/examples/stm32l5/src/bin/usb_serial.rs
@@ -57,6 +57,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 
diff --git a/examples/stm32u5/src/bin/usb_serial.rs b/examples/stm32u5/src/bin/usb_serial.rs
index eaa1c2912..a218d5dfd 100644
--- a/examples/stm32u5/src/bin/usb_serial.rs
+++ b/examples/stm32u5/src/bin/usb_serial.rs
@@ -67,6 +67,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );