diff --git a/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java b/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java
index 32db7e0..bc49d86 100644
--- a/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java
+++ b/app/src/main/java/com/kooritea/fcmfix/xposed/XposedModule.java
@@ -166,7 +166,7 @@ public void run() {
                     super.run();
                     try{
                         XSharedPreferences pref = new XSharedPreferences("com.kooritea.fcmfix", "config");
-                        if(pref.getBoolean("init", false)){
+                        if(pref.getFile().canRead() && pref.getBoolean("init", false)){
                             allowList = pref.getStringSet("allowList", null);
                             if(allowList != null && "android".equals(context.getPackageName())){
                                 printLog( "[XSharedPreferences Mode]onUpdateConfig allowList size: " + allowList.size());