diff --git a/server/services/team/service.ts b/server/services/team/service.ts
index 1952adb45fdc3..c5500a8a2cd30 100644
--- a/server/services/team/service.ts
+++ b/server/services/team/service.ts
@@ -323,6 +323,10 @@ export class TeamService extends ServiceClass implements ITeamService {
 				throw new Error('room-already-on-team');
 			}
 
+			if (room.u?._id !== uid) {
+				throw new Error('invalid-user');
+			}
+
 			room.teamId = teamId;
 		}