diff --git a/example/alloc_system.rs b/example/alloc_system.rs
index 89661918d05..fd01fcf1fc8 100644
--- a/example/alloc_system.rs
+++ b/example/alloc_system.rs
@@ -13,17 +13,17 @@
 
 // The minimum alignment guaranteed by the architecture. This value is used to
 // add fast paths for low alignment values.
-#[cfg(all(any(target_arch = "x86",
+#[cfg(any(target_arch = "x86",
               target_arch = "arm",
               target_arch = "mips",
               target_arch = "powerpc",
-              target_arch = "powerpc64")))]
+              target_arch = "powerpc64"))]
 const MIN_ALIGN: usize = 8;
-#[cfg(all(any(target_arch = "x86_64",
+#[cfg(any(target_arch = "x86_64",
               target_arch = "aarch64",
               target_arch = "mips64",
               target_arch = "s390x",
-              target_arch = "sparc64")))]
+              target_arch = "sparc64"))]
 const MIN_ALIGN: usize = 16;
 
 pub struct System;