diff --git a/src/MIDI.h b/src/MIDI.h
index 0e54745..68a3dfd 100644
--- a/src/MIDI.h
+++ b/src/MIDI.h
@@ -13,6 +13,10 @@
 #include "midi_Settings.h"
 #include "midi_Defs.h"
 
+#ifdef FSE_AVR
+#include <ak47.h>
+#endif
+
 // -----------------------------------------------------------------------------
 
 BEGIN_MIDI_NAMESPACE