diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index d11abf8..4a4a1b4 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -5239,6 +5239,11 @@
         mContext.registerReceiver(new BroadcastReceiver() {
             @Override
             public void onReceive(Context context, Intent intent) {
+                final String action = intent.getAction();
+                if (action == null) {
+                    return;
+                }
+
                 String[] pkgs = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES);
                 if (pkgs != null) {
                     for (String pkg : pkgs) {