diff --git a/src/rooms/MSender.ts b/src/rooms/MSender.ts
index 39dfcb9..8ab14ca 100644
--- a/src/rooms/MSender.ts
+++ b/src/rooms/MSender.ts
@@ -171,7 +171,7 @@ Object.defineProperties(Room.prototype, {
                 error(`bRemovePet no player found: ${pid}`);
                 return;
             }
-            let pet = player.pets.get(obj.pos);
+            let pet = player.pets.get(obj.pos + '');
             if (!pet) {
                 error(`bRemovePet no pet found: ${pid}, pos: ${obj.pos}`);
                 return;