diff --git a/libs/langchain/langchain/retrievers/self_query/timescalevector.py b/libs/langchain/langchain/retrievers/self_query/timescalevector.py
index 3d417578fe577..005b216e06667 100644
--- a/libs/langchain/langchain/retrievers/self_query/timescalevector.py
+++ b/libs/langchain/langchain/retrievers/self_query/timescalevector.py
@@ -77,8 +77,8 @@ def visit_comparison(self, comparison: Comparison) -> client.Predicates:
     def visit_structured_query(
         self, structured_query: StructuredQuery
     ) -> Tuple[str, dict]:
-        if structured_query.filter is None:
-            kwargs = {}
-        else:
-            kwargs = {"predicates": structured_query.filter.accept(self)}
+        kwargs = {}
+        if structured_query.filter is not None:
+            kwargs["predicates"] = structured_query.filter.accept(self)
+
         return structured_query.query, kwargs