diff --git a/packages/jupyter-ai/jupyter_ai/extension.py b/packages/jupyter-ai/jupyter_ai/extension.py
index aea2396da..f25cbfa9b 100644
--- a/packages/jupyter-ai/jupyter_ai/extension.py
+++ b/packages/jupyter-ai/jupyter_ai/extension.py
@@ -158,7 +158,9 @@ def initialize_settings(self):
 
             # TODO: Validate slash ID (/^[A-Za-z0-9_]+$/)
             # The "default" handler above takes precedence over any "default" command here
-            command_name = f"/{chat_handler.slash_id}" if chat_handler.slash_id else "default"
+            command_name = (
+                f"/{chat_handler.slash_id}" if chat_handler.slash_id else "default"
+            )
 
             if command_name in jai_chat_handlers:
                 self.log.error(