diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 2c7863bd3..8f13baff9 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -148,7 +148,9 @@ class Coder:
                     done_messages = from_coder.summarizer.summarize_all(done_messages)
                 except ValueError as e:
                     # If summarization fails, keep the original messages and warn the user
-                    io.tool_warning("Chat history summarization failed, continuing with full history")
+                    io.tool_warning(
+                        "Chat history summarization failed, continuing with full history"
+                    )
                     io.tool_warning(str(e))
 
             # Bring along context from the old Coder