diff --git a/api/core/workflow/nodes/document_extractor/node.py b/api/core/workflow/nodes/document_extractor/node.py
index a23f417aaa..8fb1baec89 100644
--- a/api/core/workflow/nodes/document_extractor/node.py
+++ b/api/core/workflow/nodes/document_extractor/node.py
@@ -235,7 +235,7 @@ def _extract_text_from_doc(file_content: bytes) -> str:
                     file=file,
                     metadata_filename=temp_file.name,
                     api_url=dify_config.UNSTRUCTURED_API_URL,
-                    api_key=dify_config.UNSTRUCTURED_API_KEY,
+                    api_key=dify_config.UNSTRUCTURED_API_KEY,  # type: ignore
                 )
             os.unlink(temp_file.name)
         return "\n".join([getattr(element, "text", "") for element in elements])