diff --git a/lib/db/const.dart b/lib/db/const.dart
index fb97849..a47e6d9 100644
--- a/lib/db/const.dart
+++ b/lib/db/const.dart
@@ -240,7 +240,7 @@ class WKDBConst {
     if (jsonStr != '' && isJsonString(jsonStr)) {
       return jsonDecode(jsonStr);
     }
-    return {};
+    return jsonStr;
   }
 
   static bool isJsonString(String str) {