diff --git a/src/runtime/rt_aio.c b/src/runtime/rt_aio.c
index a65baab..999a3b6 100644
--- a/src/runtime/rt_aio.c
+++ b/src/runtime/rt_aio.c
@@ -364,7 +364,7 @@ static void win32WriteBatchInner(const char *file_path, const rt_file_write *wri
         op->state = RT_AIO_STATE_FINISHED;
         *handle   = RT_AIO_INVALID_HANDLE;
         CloseHandle(file_handle);
-        op->file_handle = INVALID_HANDLE;
+        op->file_handle = NULL;
     }
 
     /* Handle is the index into the ringbuffer + 1 */