diff --git a/libs/langchain/langchain/tools/openapi/utils/api_models.py b/libs/langchain/langchain/tools/openapi/utils/api_models.py
index f86ba49c77c..42e8f13a358 100644
--- a/libs/langchain/langchain/tools/openapi/utils/api_models.py
+++ b/libs/langchain/langchain/tools/openapi/utils/api_models.py
@@ -480,7 +480,7 @@ class APIOperation(BaseModel):
             description = spec.paths[path].description or spec.paths[path].summary
         return cls(
             operation_id=operation_id,
-            description=description,
+            description=description or "",
             base_url=spec.base_url,
             path=path,
             method=method,