diff --git a/module_usb_audio/endpoint0/descriptors.h b/module_usb_audio/endpoint0/descriptors.h
index a65bcbaf..e180bba2 100644
--- a/module_usb_audio/endpoint0/descriptors.h
+++ b/module_usb_audio/endpoint0/descriptors.h
@@ -602,8 +602,8 @@ enum USBInterfaceNumber
     INTERFACE_NUMBER_AUDIO_INPUT, 
 #endif
 #if defined(MIDI) && (MIDI != 0)    
-    INTERFACE_NUMBER_MIDI_OUTPUT,
-    INTERFACE_NUMBER_MIDI_INPUT, 
+    INTERFACE_NUMBER_MIDI_CONTROL,
+    INTERFACE_NUMBER_MIDI_STREAM, 
 #endif
 #if defined(DFU) && (DFU != 0)    
     INTERFACE_NUMBER_DFU,