diff --git a/include/InstrumentPlayHandle.h b/include/InstrumentPlayHandle.h
index 1b4d3d12a..239e08d1f 100644
--- a/include/InstrumentPlayHandle.h
+++ b/include/InstrumentPlayHandle.h
@@ -28,9 +28,9 @@
 #include "PlayHandle.h"
 #include "Instrument.h"
 #include "NotePlayHandle.h"
+#include "export.h"
 
-
-class InstrumentPlayHandle : public PlayHandle
+class EXPORT InstrumentPlayHandle : public PlayHandle
 {
 public:
 	InstrumentPlayHandle( Instrument * instrument, InstrumentTrack* instrumentTrack );