diff --git a/embassy-usb/src/class/uac1/speaker.rs b/embassy-usb/src/class/uac1/speaker.rs
index 96456d94a..6c3a4e378 100644
--- a/embassy-usb/src/class/uac1/speaker.rs
+++ b/embassy-usb/src/class/uac1/speaker.rs
@@ -579,7 +579,7 @@ impl<'d> Control<'d> {
 
         if endpoint_address != self.streaming_endpoint_address {
             debug!(
-                "Unhandled endpoint set request for endpoint {} and control {} with data {}",
+                "Unhandled endpoint set request for endpoint {} and control {} with data {:?}",
                 endpoint_address, control_selector, data
             );
             return None;
diff --git a/embassy-usb/src/types.rs b/embassy-usb/src/types.rs
index cb9fe2576..ea6347c7d 100644
--- a/embassy-usb/src/types.rs
+++ b/embassy-usb/src/types.rs
@@ -18,6 +18,12 @@ impl From<InterfaceNumber> for u8 {
     }
 }
 
+impl core::fmt::Display for InterfaceNumber {
+    fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+
 /// A handle for a USB string descriptor that contains its index.
 #[derive(Copy, Clone, Eq, PartialEq)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]