diff --git a/apps/meteor/ee/app/message-read-receipt/server/hooks/afterReadMessages.ts b/apps/meteor/ee/app/message-read-receipt/server/hooks/afterReadMessages.ts
index 293ab0a17373e..f96a9a773fecc 100644
--- a/apps/meteor/ee/app/message-read-receipt/server/hooks/afterReadMessages.ts
+++ b/apps/meteor/ee/app/message-read-receipt/server/hooks/afterReadMessages.ts
@@ -15,7 +15,7 @@ callbacks.add(
 
 		if (tmid) {
 			await MessageReads.readThread(uid, tmid);
-		} else {
+		} else if (lastSeen) {
 			await ReadReceipt.markMessagesAsRead(rid, uid, lastSeen);
 		}
 	},
diff --git a/apps/meteor/ee/server/lib/message-read-receipt/ReadReceipt.js b/apps/meteor/ee/server/lib/message-read-receipt/ReadReceipt.js
index 710c1a10d4519..bb957b8f2b142 100644
--- a/apps/meteor/ee/server/lib/message-read-receipt/ReadReceipt.js
+++ b/apps/meteor/ee/server/lib/message-read-receipt/ReadReceipt.js
@@ -40,7 +40,7 @@ export const ReadReceipt = {
 		const room = await Rooms.findOneById(roomId, { projection: { lm: 1 } });
 
 		// if users last seen is greater than room's last message, it means the user already have this room marked as read
-		if (!room || (userLastSeen && userLastSeen > room.lm)) {
+		if (!room || userLastSeen > room.lm) {
 			return;
 		}
 
diff --git a/apps/meteor/server/models/raw/Messages.ts b/apps/meteor/server/models/raw/Messages.ts
index 8f35e5efe0206..49930a8c92ea9 100644
--- a/apps/meteor/server/models/raw/Messages.ts
+++ b/apps/meteor/server/models/raw/Messages.ts
@@ -1536,7 +1536,7 @@ export class MessagesRaw extends BaseRaw<IMessage> implements IMessagesModel {
 		);
 	}
 
-	findVisibleUnreadMessagesByRoomAndDate(rid: string, after?: Date): FindCursor<Pick<IMessage, '_id' | 't' | 'pinned' | 'drid' | 'tmid'>> {
+	findVisibleUnreadMessagesByRoomAndDate(rid: string, after: Date): FindCursor<Pick<IMessage, '_id' | 't' | 'pinned' | 'drid' | 'tmid'>> {
 		const query = {
 			unread: true,
 			rid,
diff --git a/packages/model-typings/src/models/IMessagesModel.ts b/packages/model-typings/src/models/IMessagesModel.ts
index 99d0a9a0e380b..d681405850fab 100644
--- a/packages/model-typings/src/models/IMessagesModel.ts
+++ b/packages/model-typings/src/models/IMessagesModel.ts
@@ -258,7 +258,7 @@ export interface IMessagesModel extends IBaseModel<IMessage> {
 		userId: string,
 		after: Date,
 	): FindCursor<Pick<IMessage, '_id' | 't' | 'pinned' | 'drid' | 'tmid'>>;
-	findVisibleUnreadMessagesByRoomAndDate(rid: string, after?: Date): FindCursor<Pick<IMessage, '_id' | 't' | 'pinned' | 'drid' | 'tmid'>>;
+	findVisibleUnreadMessagesByRoomAndDate(rid: string, after: Date): FindCursor<Pick<IMessage, '_id' | 't' | 'pinned' | 'drid' | 'tmid'>>;
 	setAsReadById(_id: string): Promise<UpdateResult>;
 	countThreads(): Promise<number>;
 	addThreadFollowerByThreadId(tmid: string, userId: string): Promise<UpdateResult>;