diff --git a/backend/service-privateroom/models/Conversation.js b/backend/service-privateroom/models/Conversation.js
index 93b215d..7b04f24 100644
--- a/backend/service-privateroom/models/Conversation.js
+++ b/backend/service-privateroom/models/Conversation.js
@@ -15,8 +15,7 @@ const ConversationSchema = new mongoose.Schema(
             type: Array
         },
     },
-    { timestamps: true },
-    { versionKey: false }
+    { timestamps: true, versionKey: false }
 );
 
 module.exports = mongoose.model(config.mongodbConversations, ConversationSchema);
\ No newline at end of file
diff --git a/backend/service-privateroom/models/Message.js b/backend/service-privateroom/models/Message.js
index d5f380a..7b70746 100644
--- a/backend/service-privateroom/models/Message.js
+++ b/backend/service-privateroom/models/Message.js
@@ -24,8 +24,7 @@ const MessageSchema = new mongoose.Schema(
             type: Date,
         },
     },
-    { timestamps: true },
-    { versionKey: false }
+    { timestamps: true, versionKey: false }
 );
 
 module.exports = mongoose.model(config.mongodbPrivatedMessages, MessageSchema);
\ No newline at end of file