diff --git a/libs/binder/AppOpsManager.cpp b/libs/binder/AppOpsManager.cpp
index e4d8201..9a061a0 100644
--- a/libs/binder/AppOpsManager.cpp
+++ b/libs/binder/AppOpsManager.cpp
@@ -28,7 +28,7 @@
 
 static const sp<IBinder>& getToken(const sp<IAppOpsService>& service) {
     pthread_mutex_lock(&gTokenMutex);
-    if (gToken == NULL) {
+    if (gToken == NULL || gToken->pingBinder() != NO_ERROR) {
         gToken = service->getToken(new BBinder());
     }
     pthread_mutex_unlock(&gTokenMutex);