diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index dd63a23..f8c0198 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -320,6 +320,8 @@
                                            audio_devices_t *device);
     static status_t releaseSoundTriggerSession(audio_session_t session);
 
+    static audio_mode_t getPhoneState();
+
     // ----------------------------------------------------------------------------
 
     class AudioPortCallback : public RefBase