diff --git a/backend-services/comment-service/src/models/Comment.ts b/backend-services/comment-service/src/models/Comment.ts
index 648cd10b57e672bc61cf280316a6d7584744e694..e99dd4d1d0738efb205cf222b5b1aaacc60a5dfe 100644
--- a/backend-services/comment-service/src/models/Comment.ts
+++ b/backend-services/comment-service/src/models/Comment.ts
@@ -6,7 +6,7 @@ export interface IComment {
     user_id:  mongoose.Schema.Types.ObjectId; //number;
     post_id:  mongoose.Schema.Types.ObjectId; //number;
     body: string;
-    users_liked: [Number];
+    users_liked: [mongoose.Schema.Types.ObjectId];
 
 }