diff --git a/engines/scumm/imuse/instrument.h b/engines/scumm/imuse/instrument.h
index 3555d319e6c..79cbd490324 100644
--- a/engines/scumm/imuse/instrument.h
+++ b/engines/scumm/imuse/instrument.h
@@ -39,7 +39,6 @@ public:
 	virtual void send(MidiChannel *mc) = 0;
 	virtual void copy_to(Instrument *dest) = 0;
 	virtual bool is_valid() = 0;
-	virtual operator int() { return 255; }
 };
 
 class Instrument {