diff --git a/python/sglang/srt/function_call_parser.py b/python/sglang/srt/function_call_parser.py
index 457258ff4..092cf2b4b 100644
--- a/python/sglang/srt/function_call_parser.py
+++ b/python/sglang/srt/function_call_parser.py
@@ -290,7 +290,6 @@ class BaseFormatDetector(ABC):
                             calls=[
                                 ToolCallItem(
                                     tool_index=self.current_tool_id,
-                                    name="",
                                     parameters=argument_diff,
                                 )
                             ],