diff --git a/source/Speaker.cpp b/source/Speaker.cpp
index ea5800ab..b7ad6faa 100644
--- a/source/Speaker.cpp
+++ b/source/Speaker.cpp
@@ -91,6 +91,7 @@ static bool g_bSpkrAvailable = false;
 static ULONG   Spkr_SubmitWaveBuffer_FullSpeed(short* pSpeakerBuffer, ULONG nNumSamples);
 static ULONG   Spkr_SubmitWaveBuffer(short* pSpeakerBuffer, ULONG nNumSamples);
 static void    Spkr_SetActive(bool bActive);
+static void    Spkr_DSUninit();
 
 //=============================================================================
 
@@ -924,7 +925,7 @@ bool Spkr_DSInit()
 	return true;
 }
 
-void Spkr_DSUninit()
+static void Spkr_DSUninit()
 {
 	if(SpeakerVoice.lpDSBvoice && SpeakerVoice.bActive)
 	{
diff --git a/source/Speaker.h b/source/Speaker.h
index 66aab730..253ff6e8 100644
--- a/source/Speaker.h
+++ b/source/Speaker.h
@@ -30,7 +30,6 @@ void    Spkr_Mute();
 void    Spkr_Demute();
 bool    Spkr_IsActive();
 bool    Spkr_DSInit();
-void    Spkr_DSUninit();
 void    SpkrSaveSnapshot(class YamlSaveHelper& yamlSaveHelper);
 void    SpkrLoadSnapshot(class YamlLoadHelper& yamlLoadHelper);