diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index c7f9816e8..8c3484c69 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -1009,7 +1009,8 @@ class Coder:
                         )
                 except Exception as err:
                     self.io.tool_error(f"Unexpected error: {err}")
-                    traceback.print_exc()
+                    lines = traceback.format_exception(type(err), err, err.__traceback__)
+                    self.io.tool_error("".join(lines))
                     return
         finally:
             if self.mdstream: