diff --git a/api/core/tools/custom_tool/tool.py b/api/core/tools/custom_tool/tool.py
index 49966f8010..a847053cfb 100644
--- a/api/core/tools/custom_tool/tool.py
+++ b/api/core/tools/custom_tool/tool.py
@@ -217,7 +217,8 @@ class ApiTool(Tool):
             else:
                 body = body
                 
-        # if there is a file upload, remove the Content-Type header so that httpx can automatically generate the boundary header required for multipart/form-data.
+        # if there is a file upload, remove the Content-Type header 
+        # so that httpx can automatically generate the boundary header required for multipart/form-data.
         # issue: https://github.com/langgenius/dify/issues/13684
         # reference: https://stackoverflow.com/questions/39280438/fetch-missing-boundary-in-multipart-form-data-post
         if files: