diff --git a/src/com/android/settings/deviceinfo/MigrateEstimateTask.java b/src/com/android/settings/deviceinfo/MigrateEstimateTask.java
index 0705d795a47..c3e0717fc7b 100644
--- a/src/com/android/settings/deviceinfo/MigrateEstimateTask.java
+++ b/src/com/android/settings/deviceinfo/MigrateEstimateTask.java
@@ -57,7 +57,6 @@ public abstract class MigrateEstimateTask extends AsyncTask<Void, Void, Long> im
     private IMediaContainerService mService;
 
     private long mSizeBytes = -1;
-    private long mTimeMillis = -1;
 
     public MigrateEstimateTask(Context context) {
         mContext = context;
@@ -108,11 +107,11 @@ public abstract class MigrateEstimateTask extends AsyncTask<Void, Void, Long> im
     @Override
     protected void onPostExecute(Long result) {
         mSizeBytes = result;
-        mTimeMillis = (mSizeBytes * DateUtils.SECOND_IN_MILLIS) / SPEED_ESTIMATE_BPS;
-        mTimeMillis = Math.max(mTimeMillis, DateUtils.SECOND_IN_MILLIS);
+        long timeMillis = (mSizeBytes * DateUtils.SECOND_IN_MILLIS) / SPEED_ESTIMATE_BPS;
+        timeMillis = Math.max(timeMillis, DateUtils.SECOND_IN_MILLIS);
 
         final String size = Formatter.formatFileSize(mContext, mSizeBytes);
-        final String time = DateUtils.formatDuration(mTimeMillis).toString();
+        final String time = DateUtils.formatDuration(timeMillis).toString();
         onPostExecute(size, time);
     }