diff --git a/docs_src/multiple_values/arguments_with_multiple_values/tutorial003_an.py b/docs_src/multiple_values/arguments_with_multiple_values/tutorial003_an.py
index 662b9d7fa2..801ee8c6ce 100644
--- a/docs_src/multiple_values/arguments_with_multiple_values/tutorial003_an.py
+++ b/docs_src/multiple_values/arguments_with_multiple_values/tutorial003_an.py
@@ -14,7 +14,11 @@ class SuperHero(str, Enum):
 def main(
     names: Annotated[
         Tuple[str, str, str, SuperHero],
-        typer.Argument(enum_by_name=True, help="Select 4 characters to play with", case_sensitive=False),
+        typer.Argument(
+            enum_by_name=True,
+            help="Select 4 characters to play with",
+            case_sensitive=False,
+        ),
     ] = ("Harry", "Hermione", "Ron", "hero3"),
 ):
     for name in names: