diff --git a/stdlib/2and3/contextlib.pyi b/stdlib/2and3/contextlib.pyi
index dec1b411d..7d092096b 100644
--- a/stdlib/2and3/contextlib.pyi
+++ b/stdlib/2and3/contextlib.pyi
@@ -25,10 +25,12 @@ _ExitFunc = Callable[[Optional[Type[BaseException]],
 _CM_EF = TypeVar('_CM_EF', ContextManager, _ExitFunc)
 
 if sys.version_info >= (3, 2):
+    class _GeneratorContextManager(ContextManager[_T], Generic[_T]):
+        def __call__(self, func: Callable[..., _T]) -> Callable[..., _T]: ...
+    def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., _GeneratorContextManager[_T]]: ...
+else:
     class GeneratorContextManager(ContextManager[_T], Generic[_T]):
         def __call__(self, func: Callable[..., _T]) -> Callable[..., _T]: ...
-    def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., GeneratorContextManager[_T]]: ...
-else:
     def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., ContextManager[_T]]: ...
 
 if sys.version_info >= (3, 7):