diff --git a/reSID.h b/reSID.h
index 56eda49..f2aaae9 100644
--- a/reSID.h
+++ b/reSID.h
@@ -36,7 +36,7 @@ class AudioPlaySID : public AudioStream
 public:
 	AudioPlaySID(void) : AudioStream(0, NULL) { begin(); }
 	void begin(void);
-	void setSampleParameters(unsigned clockfreq, unsigned samplerate);
+	void setSampleParameters(float clockfreq, float samplerate);
 	inline void setreg(int ofs, int val) { sid.write(ofs, val); }
 	inline uint8_t getreg(int ofs) { return sid.read(ofs); }
 	void reset(void);