diff --git a/stubs/aiofiles/aiofiles/base.pyi b/stubs/aiofiles/aiofiles/base.pyi
index b06adf68074a..a6197fbad6ac 100644
--- a/stubs/aiofiles/aiofiles/base.pyi
+++ b/stubs/aiofiles/aiofiles/base.pyi
@@ -9,7 +9,7 @@ _T_contra = TypeVar("_T_contra", contravariant=True)
 
 class AsyncBase(Generic[_T]):
     def __init__(self, file: str, loop: Any, executor: Any) -> None: ...
-    async def __aiter__(self: Self) -> Self: ...
+    def __aiter__(self: Self) -> Self: ...
     async def __anext__(self) -> _T: ...
 
 class AiofilesContextManager(Generic[_T_co, _T_contra, _V_co]):