diff --git a/dlls/winecoreaudio.drv/mmdevdrv.c b/dlls/winecoreaudio.drv/mmdevdrv.c
index 8316d650636..c362a5142ff 100644
--- a/dlls/winecoreaudio.drv/mmdevdrv.c
+++ b/dlls/winecoreaudio.drv/mmdevdrv.c
@@ -2956,7 +2956,7 @@ static HRESULT WINAPI SimpleAudioVolume_SetMute(ISimpleAudioVolume *iface,
     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
     AudioSession *session = This->session;
 
-    TRACE("(%p)->(%u, %p)\n", session, mute, context);
+    TRACE("(%p)->(%u, %s)\n", session, mute, debugstr_guid(context));
 
     if(context)
         FIXME("Notifications not supported yet\n");