diff --git a/sys/dev/sound/midi/midi.c b/sys/dev/sound/midi/midi.c
--- a/sys/dev/sound/midi/midi.c
+++ b/sys/dev/sound/midi/midi.c
@@ -78,13 +78,6 @@
 	MIDI_IN_START, MIDI_IN_SYSEX, MIDI_IN_DATA
 };
 
-/*
- * The MPU interface current has init() uninit() inqsize() outqsize()
- * callback() : fiddle with the tx|rx status.
- */
-
-#include "mpu_if.h"
-
 /*
  * /dev/rmidi	Structure definitions
  */