diff --git a/include/mixer.h b/include/mixer.h
index e41b1838..3c02d93a 100644
--- a/include/mixer.h
+++ b/include/mixer.h
@@ -37,6 +37,9 @@ void MIXER_SetFreq(MIXER_Channel * chan,Bit32u freq);
 void MIXER_SetMode(MIXER_Channel * chan,Bit8u mode);
 void MIXER_Enable(MIXER_Channel * chan,bool enable);
 
-void PCSPEAKER_Enable(bool enable);
-void PCSPEAKER_SetFreq(Bit32u freq);
+/* PC Speakers functions, tightly related to the timer functions */
+
+void PCSPEAKER_Enable(bool enable);
+void PCSPEAKER_SetCounter(Bitu cntr,Bitu mode);
+