diff --git a/embassy-usb/src/class/uac1/speaker.rs b/embassy-usb/src/class/uac1/speaker.rs
index 68ff7ec1f1..96456d94a8 100644
--- a/embassy-usb/src/class/uac1/speaker.rs
+++ b/embassy-usb/src/class/uac1/speaker.rs
@@ -550,6 +550,7 @@ impl<'d> Control<'d> {
         }
 
         if req.request != SET_CUR {
+            debug!("Unsupported interface set request type {}", req.request);
             return Some(OutResponse::Rejected);
         }