diff --git a/app/src/main/java/org/xing/android/AppConfig.java b/app/src/main/java/org/xing/android/AppConfig.java
index e686da9..283c96a 100644
--- a/app/src/main/java/org/xing/android/AppConfig.java
+++ b/app/src/main/java/org/xing/android/AppConfig.java
@@ -27,6 +27,7 @@ public class AppConfig {
     private static boolean checkUpdate;
     private static Context mContext;
     private static SharedPreferences prefs;
+	private static SharedPreferences mConprefs;
 
     public static void loadConfig(Context mContext) {