diff --git a/packages/backend/server/src/core/sync/gateway.ts b/packages/backend/server/src/core/sync/gateway.ts
index a9a4a1e0e4..ade38a6a8e 100644
--- a/packages/backend/server/src/core/sync/gateway.ts
+++ b/packages/backend/server/src/core/sync/gateway.ts
@@ -11,7 +11,6 @@ import { ClsInterceptor } from 'nestjs-cls';
 import { Socket } from 'socket.io';
 
 import {
-  AlreadyInSpace,
   CallMetric,
   DocNotFound,
   GatewayErrorWrapper,
@@ -617,13 +616,17 @@ abstract class SyncSocketAdapter {
   }
 
   async join(userId: string, spaceId: string, roomType: RoomType = 'sync') {
-    this.assertNotIn(spaceId, roomType);
+    if (this.in(spaceId, roomType)) {
+      return;
+    }
     await this.assertAccessible(spaceId, userId, WorkspaceRole.Collaborator);
     return this.client.join(this.room(spaceId, roomType));
   }
 
   async leave(spaceId: string, roomType: RoomType = 'sync') {
-    this.assertIn(spaceId, roomType);
+    if (!this.in(spaceId, roomType)) {
+      return;
+    }
     return this.client.leave(this.room(spaceId, roomType));
   }
 
@@ -631,12 +634,6 @@ abstract class SyncSocketAdapter {
     return this.client.rooms.has(this.room(spaceId, roomType));
   }
 
-  assertNotIn(spaceId: string, roomType: RoomType = 'sync') {
-    if (this.client.rooms.has(this.room(spaceId, roomType))) {
-      throw new AlreadyInSpace({ spaceId });
-    }
-  }
-
   assertIn(spaceId: string, roomType: RoomType = 'sync') {
     if (!this.client.rooms.has(this.room(spaceId, roomType))) {
       throw new NotInSpace({ spaceId });