--- a/mobile/android/base/GeckoNetworkManager.java
+++ b/mobile/android/base/GeckoNetworkManager.java
@@ -32,21 +32,22 @@ import android.util.Log;
  * Current connection is firstly obtained from Android's ConnectivityManager,
  * which is represented by the constant, and then will be mapped into the
  * connection type defined in Network Information API version 3.
  */
 
 public class GeckoNetworkManager extends BroadcastReceiver implements NativeEventListener {
     private static final String LOGTAG = "GeckoNetworkManager";
 
-    static private final GeckoNetworkManager sInstance = new GeckoNetworkManager();
+    static private GeckoNetworkManager sInstance = new GeckoNetworkManager();
 
     public static void destroy() {
         if (sInstance != null) {
             sInstance.onDestroy();
+            sInstance = null;
         }
     }
 
     // Connection Type defined in Network Information API v3.
     private enum ConnectionType {
         CELLULAR(0),
         BLUETOOTH(1),
         ETHERNET(2),