diff --git a/tests/basic/test_reasoning.py b/tests/basic/test_reasoning.py
index afe6c8731..fdb2fdd77 100644
--- a/tests/basic/test_reasoning.py
+++ b/tests/basic/test_reasoning.py
@@ -420,7 +420,9 @@ End"""
                 # Add required attributes expected by show_send_output
                 self.choices = [MagicMock()]
                 self.choices[0].message.content = content
-                self.choices[0].message.reasoning = reasoning  # Using reasoning instead of reasoning_content
+                self.choices[0].message.reasoning = (
+                    reasoning  # Using reasoning instead of reasoning_content
+                )
                 self.finish_reason = "stop"
 
         mock_completion = MockCompletion(main_content, reasoning_content)