1 files changed, 4 insertions, 5 deletions
diff --git a/engines/scumm/imuse/instrument.h b/engines/scumm/imuse/instrument.h
index 47f556b40b..374b6352f1 100644
--- a/engines/scumm/imuse/instrument.h
+++ b/engines/scumm/imuse/instrument.h
@@ -25,24 +25,23 @@
 
 
 #include "common/scummsys.h"
+#include "common/serializer.h"
 
 class MidiChannel;
 
 namespace Scumm {
 
-class Serializer;
 class Instrument;
 
-class InstrumentInternal {
+class InstrumentInternal : public Common::Serializable {
 public:
 	virtual ~InstrumentInternal() {}
-	virtual void saveOrLoad(Serializer *s) = 0;
 	virtual void send(MidiChannel *mc) = 0;
 	virtual void copy_to(Instrument *dest) = 0;
 	virtual bool is_valid() = 0;
 };
 
-class Instrument {
+class Instrument : public Common::Serializable {
 private:
 	byte _type;
 	InstrumentInternal *_instrument;
@@ -78,7 +77,7 @@ public:
 
 	byte getType() { return _type; }
 	bool isValid() { return (_instrument ? _instrument->is_valid() : false); }
-	void saveOrLoad(Serializer *s);
+	void saveLoadWithSerializer(Common::Serializer &s);
 	void send(MidiChannel *mc) {
 		if (_instrument)
 			_instrument->send(mc);