diff --git a/langgraph/checkpoint/base.py b/langgraph/checkpoint/base.py
index 19ced7cfa..5a9dc99ce 100644
--- a/langgraph/checkpoint/base.py
+++ b/langgraph/checkpoint/base.py
@@ -189,7 +189,7 @@ class BaseCheckpointSaver(ABC):
 
     def asearch(
         self,
-        metadata: CheckpointMetadata,
+        metadata_filter: CheckpointMetadata,
         *,
         before: Optional[RunnableConfig] = None,
         limit: Optional[int] = None,