diff --git a/src/com/android/settings/network/telephony/MobileNetworkActivity.java b/src/com/android/settings/network/telephony/MobileNetworkActivity.java
index 9dd6ddde15e..0f3d289ce0e 100644
--- a/src/com/android/settings/network/telephony/MobileNetworkActivity.java
+++ b/src/com/android/settings/network/telephony/MobileNetworkActivity.java
@@ -118,6 +118,9 @@ public class MobileNetworkActivity extends SettingsBaseActivity
     @Override
     protected void onDestroy() {
         super.onDestroy();
+        if (mProxySubscriptionMgr == null) {
+            return;
+        }
         mProxySubscriptionMgr.removeActiveSubscriptionsListener(this);
     }