diff --git a/src/sound/cocoa_s.cpp b/src/sound/cocoa_s.cpp
--- a/src/sound/cocoa_s.cpp
+++ b/src/sound/cocoa_s.cpp
@@ -44,7 +44,7 @@ static OSStatus audioCallback(void *inRe
 }
 
 
-const char *SoundDriver_Cocoa::Start(const char * const *parm)
+const char *SoundDriver_Cocoa::Start(const StringList &parm)
 {
 	struct AURenderCallbackStruct callback;
 	AudioStreamBasicDescription requestedDesc;