diff --git a/features/steps/action_schema_steps.py b/features/steps/action_schema_steps.py
index 05c70a80d..335b2fc82 100644
--- a/features/steps/action_schema_steps.py
+++ b/features/steps/action_schema_steps.py
@@ -137,8 +137,12 @@ def step_given_yaml_with_name(context: Context, name: str) -> None:
 # so that Behave's parse matcher selects the longer match first.
 
 
-@given('an action YAML string with an argument of type "{arg_type}" and default {default_value}')
-def step_given_yaml_with_arg_and_default(context: Context, arg_type: str, default_value: str) -> None:
+@given(
+    'an action YAML string with an argument of type "{arg_type}" and default {default_value}'
+)
+def step_given_yaml_with_arg_and_default(
+    context: Context, arg_type: str, default_value: str
+) -> None:
     """Provide YAML with an argument that has a specific type and default value."""
     # Parse the default value from the string representation
     # Handle special cases: true/false for booleans, numbers, strings, lists