diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 0bcb9a0..27e4627 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -34,7 +34,8 @@
                                 audio_session_t sessionId,
                                 uid_t uid,
                                 audio_output_flags_t flags,
-                                track_type type);
+                                track_type type,
+                                audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
     virtual             ~Track();
     virtual status_t    initCheck() const;