diff --git a/aider/sendchat.py b/aider/sendchat.py
index b5f05e578..7dfcbf145 100644
--- a/aider/sendchat.py
+++ b/aider/sendchat.py
@@ -48,7 +48,7 @@ def lazy_litellm_retry_decorator(func):
             giveup=should_giveup,
             max_time=60,
             on_backoff=lambda details: print(
-                f"{details.get('exception','Exception')}\nRetry in {details['wait']:.1f} seconds."
+                f"{details.get('exception', 'Exception')}\nRetry in {details['wait']:.1f} seconds."
             ),
         )(func)
         return decorated_func(*args, **kwargs)