diff --git a/libs/langchain/langchain/vectorstores/matching_engine.py b/libs/langchain/langchain/vectorstores/matching_engine.py
index a480580a760..39f27094f1f 100644
--- a/libs/langchain/langchain/vectorstores/matching_engine.py
+++ b/libs/langchain/langchain/vectorstores/matching_engine.py
@@ -233,7 +233,9 @@ class MatchingEngine(VectorStore):
         filter = filter or []
 
         # If the endpoint is public we use the find_neighbors function.
-        if self.endpoint._public_match_client:
+        if hasattr(self.endpoint, "_public_match_client") and (
+            self.endpoint._public_match_client
+        ):
             response = self.endpoint.find_neighbors(
                 deployed_index_id=self._get_index_id(),
                 queries=[embedding],