diff --git a/indra/llaudio/llaudioengine_openal.h b/indra/llaudio/llaudioengine_openal.h
index 366f9259e31e825f139763ea04ff7290abe6f9a7..a3cab97cd2f4ab4663ed569150bf6d06eed18055 100644
--- a/indra/llaudio/llaudioengine_openal.h
+++ b/indra/llaudio/llaudioengine_openal.h
@@ -40,7 +40,7 @@ class LLAudioEngine_OpenAL : public LLAudioEngine
 		LLAudioEngine_OpenAL();
 		virtual ~LLAudioEngine_OpenAL();
 
-        virtual bool init(const S32 num_channels, void *user_data, const std::string &app_title);
+        virtual bool init(void *user_data, const std::string &app_title);
         virtual std::string getDriverName(bool verbose);
 		virtual void allocateListener();