diff --git a/package/base-files/files/lib/preinit/20_device_fs_mount b/package/base-files/files/lib/preinit/20_device_fs_mount
index f82f9a6f4..fb0a4c0fa 100644
--- a/package/base-files/files/lib/preinit/20_device_fs_mount
+++ b/package/base-files/files/lib/preinit/20_device_fs_mount
@@ -7,7 +7,7 @@ do_mount_devfs() {
 }
 
 do_mount_hotplug() {
-    mount -t tmpfs tmpfs /dev -o size=512K
+    mount -t tmpfs tmpfs /dev -o mode=0755,size=512K
 }
 
 do_mount_udev() {