diff --git a/embassy-usb/src/builder.rs b/embassy-usb/src/builder.rs
index c19e13fe0..9a21b9a3b 100644
--- a/embassy-usb/src/builder.rs
+++ b/embassy-usb/src/builder.rs
@@ -34,17 +34,20 @@ pub struct Config<'a> {
     /// Device class code assigned by USB.org. Set to `0xff` for vendor-specific
     /// devices that do not conform to any class.
     ///
-    /// Default: `0x00` (class code specified by interfaces)
+    /// Default: `0xEF`
+    /// See also: `composite_with_iads`
     pub device_class: u8,
 
     /// Device sub-class code. Depends on class.
     ///
-    /// Default: `0x00`
+    /// Default: `0x02`
+    /// See also: `composite_with_iads`
     pub device_sub_class: u8,
 
     /// Device protocol code. Depends on class and sub-class.
     ///
-    /// Default: `0x00`
+    /// Default: `0x01`
+    /// See also: `composite_with_iads`
     pub device_protocol: u8,
 
     /// Device release version in BCD.