diff --git a/reactos/lib/drivers/sound/mment4/control.c b/reactos/lib/drivers/sound/mment4/control.c
index 7d8b437014c..077620bf7ec 100644
--- a/reactos/lib/drivers/sound/mment4/control.c
+++ b/reactos/lib/drivers/sound/mment4/control.c
@@ -117,6 +117,7 @@ GetNt4SoundDeviceCapabilities(
     {
         /* FIXME - need to support AUX and mixer devices */
         SND_ASSERT( FALSE );
+        IoCtl = 0;
     }
 
     /* Get the capabilities information from the driver */