diff --git a/app/routes/pins.py b/app/routes/pins.py
index 0eb067e..2eaf08e 100644
--- a/app/routes/pins.py
+++ b/app/routes/pins.py
@@ -289,7 +289,7 @@ async def delete_pin_share(pin_id: str, friend_id: str, current_user: User = Dep
         # Supprimer la permission de partage
         result = pin_permissions_collection.delete_one({
             "pin_id": ObjectId(pin_id),
-            "user_id": ObjectId(friend_id)
+            "user_id": friend_id
         })
 
         if result.deleted_count == 0: