diff --git a/app/routes/pins.py b/app/routes/pins.py
index f7af6d4..af73283 100644
--- a/app/routes/pins.py
+++ b/app/routes/pins.py
@@ -79,8 +79,8 @@ async def update_pin(id: str, pin: PinDTO, current_user: User = Depends(get_curr
                 if not permission:
                     raise HTTPException(status_code=403, detail="You don't have permission to edit this pin")
             
-            # Ajouter l'ID de l'utilisateur au PinDTO
-            pin.user_id = existing_pin.user_id
+            # Garder le même user_id
+            pin.user_id = existing_pin["user_id"]
         
         # Mettre à jour le pin
         pins_collection.update_one({"_id": ObjectId(id)}, {"$set": pin.model_dump()})