diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 36a7b99..80fe71a 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -5122,6 +5122,7 @@
         final Phone phone = getPhone(subId);
         if (phone == null) {
             log("getSimLocaleForSubscriber, invalid subId");
+            return null;
         }
         final long identity = Binder.clearCallingIdentity();
         try {