diff --git a/fastapi/dependencies/models.py b/fastapi/dependencies/models.py
index 61cfbcb0a..ac54a3cc8 100644
--- a/fastapi/dependencies/models.py
+++ b/fastapi/dependencies/models.py
@@ -15,7 +15,7 @@ else:  # pragma: no cover
     from asyncio import iscoroutinefunction
 
 
-def _unwrapped_call(call: Optional[Callable[..., Any]]) -> Optional[Callable[..., Any]]:
+def _unwrapped_call(call: Optional[Callable[..., Any]]) -> Any:
     if call is None:
         return call  # pragma: no cover
     unwrapped = inspect.unwrap(_impartial(call))