diff --git a/src/event/ngx_event.h b/src/event/ngx_event.h
index 053bd16f8..19fec681b 100644
--- a/src/event/ngx_event.h
+++ b/src/event/ngx_event.h
@@ -152,12 +152,12 @@ struct ngx_event_aio_s {
     ngx_event_handler_pt       handler;
     ngx_file_t                *file;
 
+    ngx_fd_t                   fd;
+
 #if (NGX_HAVE_AIO_SENDFILE || NGX_COMPAT)
     ssize_t                  (*preload_handler)(ngx_buf_t *file);
 #endif
 
-    ngx_fd_t                   fd;
-
 #if (NGX_HAVE_EVENTFD)
     int64_t                    res;
 #endif