diff --git a/benchmarks/common/mem0_client.py b/benchmarks/common/mem0_client.py
index 05be44c..0735b95 100644
--- a/benchmarks/common/mem0_client.py
+++ b/benchmarks/common/mem0_client.py
@@ -257,7 +257,7 @@ async def _search_oss(self, query, user_id, top_k, rerank) -> list[dict]:
         session = await self._get_session()
         payload: dict[str, Any] = {
             "query": query,
-            "user_id": user_id,
+            "filters": {"user_id": user_id},
             "limit": top_k,
         }
         if rerank: