diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index a45e6f5..8d41379 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -3103,14 +3103,11 @@
             throw new IllegalArgumentException("Invalid NetworkCallback");
         }
         try {
+            // CallbackHandler will release callback when receiving CALLBACK_RELEASED.
             mService.releaseNetworkRequest(networkCallback.networkRequest);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
-
-        synchronized (sNetworkCallback) {
-            sNetworkCallback.remove(networkCallback.networkRequest);
-        }
     }
 
     /**