diff --git a/django-stubs/core/management/base.pyi b/django-stubs/core/management/base.pyi
index 1e7d066..fc3d34b 100644
--- a/django-stubs/core/management/base.pyi
+++ b/django-stubs/core/management/base.pyi
@@ -39,7 +39,7 @@ class DjangoHelpFormatter(HelpFormatter):
 
 class OutputWrapper(TextIOBase):
     @property
-    def style_func(self) -> Optional[Callable[[str], str]]: ...
+    def style_func(self) -> Callable[[str], str]: ...
     @style_func.setter
     def style_func(self, style_func: Optional[Callable[[str], str]]) -> None: ...
     ending: str = ...