diff --git a/services/audiopolicy/service/AudioPolicyService.cpp b/services/audiopolicy/service/AudioPolicyService.cpp
index f3cddc3..56d7ff1 100644
--- a/services/audiopolicy/service/AudioPolicyService.cpp
+++ b/services/audiopolicy/service/AudioPolicyService.cpp
@@ -29,7 +29,6 @@
 #include <cutils/multiuser.h>
 #include <cutils/properties.h>
 #include <binder/IPCThreadState.h>
-#include <binder/ActivityManager.h>
 #include <binder/PermissionController.h>
 #include <binder/IResultReceiver.h>
 #include <utils/String16.h>
@@ -502,26 +501,24 @@
 // -----------  AudioPolicyService::UidPolicy implementation ----------
 
 void AudioPolicyService::UidPolicy::registerSelf() {
-    ActivityManager am;
-    am.registerUidObserver(this, ActivityManager::UID_OBSERVER_GONE
+    status_t res = mAm.linkToDeath(this);
+    mAm.registerUidObserver(this, ActivityManager::UID_OBSERVER_GONE
             | ActivityManager::UID_OBSERVER_IDLE
             | ActivityManager::UID_OBSERVER_ACTIVE,
             ActivityManager::PROCESS_STATE_UNKNOWN,
             String16("audioserver"));
-    status_t res = am.linkToDeath(this);
     if (!res) {
         Mutex::Autolock _l(mLock);
         mObserverRegistered = true;
     } else {
         ALOGE("UidPolicy::registerSelf linkToDeath failed: %d", res);
-        am.unregisterUidObserver(this);
+        mAm.unregisterUidObserver(this);
     }
 }
 
 void AudioPolicyService::UidPolicy::unregisterSelf() {
-    ActivityManager am;
-    am.unlinkToDeath(this);
-    am.unregisterUidObserver(this);
+    mAm.unlinkToDeath(this);
+    mAm.unregisterUidObserver(this);
     Mutex::Autolock _l(mLock);
     mObserverRegistered = false;
 }
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index 407d7a5..4713f2f 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -23,6 +23,7 @@
 #include <utils/String8.h>
 #include <utils/Vector.h>
 #include <utils/SortedVector.h>
+#include <binder/ActivityManager.h>
 #include <binder/BinderService.h>
 #include <binder/IUidObserver.h>
 #include <system/audio.h>
@@ -302,6 +303,7 @@
 
         wp<AudioPolicyService> mService;
         Mutex mLock;
+        ActivityManager mAm;
         bool mObserverRegistered;
         std::unordered_map<uid_t, bool> mOverrideUids;
         std::unordered_map<uid_t, bool> mCachedUids;