diff --git a/module_usb_midi/src/usb_midi.xc b/module_usb_midi/src/usb_midi.xc
index 97375145..f2704a81 100644
--- a/module_usb_midi/src/usb_midi.xc
+++ b/module_usb_midi/src/usb_midi.xc
@@ -9,6 +9,7 @@
 #ifdef IAP
 #include "iap.h"
 #include "iap_user.h"
+#include "coprocessor_user.h"
 #endif
 //#define MIDI_LOOPBACK 1
 int icount = 0;