diff --git a/src/com/android/settings/network/telephony/BackupCallingPreferenceController.java b/src/com/android/settings/network/telephony/BackupCallingPreferenceController.java
index c4bf6b46250..d1c9f7b1ea2 100644
--- a/src/com/android/settings/network/telephony/BackupCallingPreferenceController.java
+++ b/src/com/android/settings/network/telephony/BackupCallingPreferenceController.java
@@ -42,7 +42,6 @@ public class BackupCallingPreferenceController extends TelephonyTogglePreference
 
     private static final String LOG_TAG = "BackupCallingPrefCtrl";
 
-    private int mSubId;
     private Preference mPreference;
 
     /**