diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 4ebd78d7c..b53a8aa56 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -21,7 +21,6 @@ from typing import List
 
 from aider import __version__, models, prompts, urls, utils
 from aider.analytics import Analytics
-from aider.coders.base_coder import UnknownEditFormat
 from aider.commands import Commands
 from aider.exceptions import LiteLLMExceptions
 from aider.history import ChatSummary