diff --git a/module_usb_aud_shared/usb_buffer/decouple.xc b/module_usb_aud_shared/usb_buffer/decouple.xc
index d5faf895..a17946a5 100644
--- a/module_usb_aud_shared/usb_buffer/decouple.xc
+++ b/module_usb_aud_shared/usb_buffer/decouple.xc
@@ -23,7 +23,9 @@
 #define NO_INLINE_MIDI_SELECT_HANDLER 1
 #include "usb_midi.h"
 #define NO_INLINE_IAP_SELECT_HANDLER 1
+#ifdef IAP
 #include "iAP.h"
+#endif
 #include "devicedefines.h"
 #include "testct_byref.h"
 #include "interrupt.h"