diff --git a/dlls/dmstyle/mutetrack.c b/dlls/dmstyle/mutetrack.c
index 2d60beffcc6..deba4966a9e 100644
--- a/dlls/dmstyle/mutetrack.c
+++ b/dlls/dmstyle/mutetrack.c
@@ -117,24 +117,38 @@ static HRESULT WINAPI mute_track_Play(IDirectMusicTrack8 *iface, void *pStateDat
 	return S_OK;
 }
 
-static HRESULT WINAPI mute_track_GetParam(IDirectMusicTrack8 *iface, REFGUID rguidType,
-        MUSIC_TIME mtTime, MUSIC_TIME *pmtNext, void *pParam)
+static HRESULT WINAPI mute_track_GetParam(IDirectMusicTrack8 *iface, REFGUID type, MUSIC_TIME time,
+        MUSIC_TIME *next, void *param)
 {
     IDirectMusicMuteTrack *This = impl_from_IDirectMusicTrack8(iface);
-    FIXME("(%p, %s, %d, %p, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pmtNext, pParam);
 
-    if (!rguidType)
+    TRACE("(%p, %s, %d, %p, %p):\n", This, debugstr_dmguid(type), time, next, param);
+
+    if (!type)
         return E_POINTER;
+    if (!IsEqualGUID(type, &GUID_MuteParam))
+        return DMUS_E_TYPE_UNSUPPORTED;
+
+    FIXME("GUID_MuteParam not handled yet\n");
 
     return S_OK;
 }
 
-static HRESULT WINAPI mute_track_SetParam(IDirectMusicTrack8 *iface, REFGUID rguidType,
-        MUSIC_TIME mtTime, void *pParam)
+static HRESULT WINAPI mute_track_SetParam(IDirectMusicTrack8 *iface, REFGUID type, MUSIC_TIME time,
+        void *param)
 {
-        IDirectMusicMuteTrack *This = impl_from_IDirectMusicTrack8(iface);
-	FIXME("(%p, %s, %d, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pParam);
-	return S_OK;
+    IDirectMusicMuteTrack *This = impl_from_IDirectMusicTrack8(iface);
+
+    TRACE("(%p, %s, %d, %p)\n", This, debugstr_dmguid(type), time, param);
+
+    if (!type)
+        return E_POINTER;
+    if (!IsEqualGUID(type, &GUID_MuteParam))
+        return DMUS_E_TYPE_UNSUPPORTED;
+
+    FIXME("GUID_MuteParam not handled yet\n");
+
+    return S_OK;
 }
 
 static HRESULT WINAPI mute_track_IsParamSupported(IDirectMusicTrack8 *iface, REFGUID rguidType)