diff --git a/src/llamafactory/data/tool_utils.py b/src/llamafactory/data/tool_utils.py
index 4c3ec5ce6..7b77078e8 100644
--- a/src/llamafactory/data/tool_utils.py
+++ b/src/llamafactory/data/tool_utils.py
@@ -758,7 +758,7 @@ class SeedToolUtils(ToolUtils):
 
             results.append(FunctionCall(func_name.strip(), json.dumps(args_dict, ensure_ascii=False)))
 
-        return results
+        return results if results else content
 
 
 class LingToolUtils(QwenToolUtils):