diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 225ef76..78fad3c 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -1,4 +1,6 @@
 /*
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ * Not a Contribution.
  * Copyright (C) 2008 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -23,6 +25,7 @@
 #include <system/audio_policy.h>
 #include <utils/Errors.h>
 #include <utils/Mutex.h>
+#include <media/AudioParameter.h>
 
 namespace android {
 
@@ -147,6 +150,7 @@
         INPUT_CLOSED,
         INPUT_CONFIG_CHANGED,
         STREAM_CONFIG_CHANGED,
+        EFFECT_CONFIG_CHANGED,
         NUM_CONFIG_EVENTS
     };