diff --git a/cyw43/src/control.rs b/cyw43/src/control.rs
index d48cd6748..f0f179e2e 100644
--- a/cyw43/src/control.rs
+++ b/cyw43/src/control.rs
@@ -46,6 +46,7 @@ pub enum ScanType {
 #[derive(Clone)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct ScanOptions {
+    /// SSID to scan for.
     pub ssid: Option<heapless::String<32>>,
     /// If set to `None`, all APs will be returned. If set to `Some`, only APs
     /// with the specified BSSID will be returned.