diff --git a/src/models/communities.js b/src/models/communities.js
index 31023c9..166ed05 100644
--- a/src/models/communities.js
+++ b/src/models/communities.js
@@ -15,10 +15,13 @@ const  CommunitySchema = new Schema({
     },
     icon: String,
     title_ids: {
-        type: [Number],
+        type: [String],
+        default: undefined
+    },
+    title_id: {
+        type: [String],
         default: undefined
     },
-    title_id: String,
     community_id: String,
     is_recommended: {
         type: Number,