diff --git a/plugins/module_utils/module.py b/plugins/module_utils/module.py
index e282dcf..7192821 100644
--- a/plugins/module_utils/module.py
+++ b/plugins/module_utils/module.py
@@ -20,8 +20,8 @@ T = TypeVar("T")
 class TypedDiff(TypedDict):
     before: str
     after: str
-    before_header: Optional[str] = None
-    after_header: Optional[str] = None
+    before_header: Optional[str]
+    after_header: Optional[str]
 
 
 def docify(input: Union[dict, AnsibleParameter]) -> dict: