diff --git a/aider/args.py b/aider/args.py
index 307eb7f6e..ba371cb1a 100644
--- a/aider/args.py
+++ b/aider/args.py
@@ -32,7 +32,10 @@ def get_parser(default_config_files, git_root):
         "files", metavar="FILE", nargs="*", help="files to edit with an LLM (optional)"
     )
     group.add_argument(
-        "--file", action="append", metavar="FILE", help="specify a file to edit (can be used multiple times)"
+        "--file",
+        action="append",
+        metavar="FILE",
+        help="specify a file to edit (can be used multiple times)",
     )
     group.add_argument(
         "--openai-api-key",