diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py
index e88efac98..4b69e39a1 100644
--- a/fastapi/dependencies/utils.py
+++ b/fastapi/dependencies/utils.py
@@ -129,7 +129,10 @@ def get_parameterless_sub_dependant(*, depends: params.Depends, path: str) -> De
     if isinstance(depends, params.Security) and depends.scopes:
         use_security_scopes.extend(depends.scopes)
     return get_dependant(
-        path=path, call=depends.dependency, scope=depends.scope, security_scopes=use_security_scopes
+        path=path,
+        call=depends.dependency,
+        scope=depends.scope,
+        security_scopes=use_security_scopes,
     )
 
 
diff --git a/tests/test_dependency_yield_scope_api_router.py b/tests/test_dependency_yield_scope_api_router.py
new file mode 100644
index 000000000..e69de29bb