diff --git a/src/emqx.appup.src b/src/emqx.appup.src
index 67b6e65e3..74f3135e0 100644
--- a/src/emqx.appup.src
+++ b/src/emqx.appup.src
@@ -129,8 +129,8 @@
      {load_module, emqx_cm, brutal_purge, soft_purge, []}
    ]},
    {<<"4.2.9">>, [
-     {load_module, emqx_zone, brutal_purge, soft_purge, []},
-   ]},	
+     {load_module, emqx_zone, brutal_purge, soft_purge, []}
+   ]},
    {<<".*">>, []}
  ],
  [
@@ -261,8 +261,8 @@
      {load_module, emqx_cm, brutal_purge, soft_purge, []}
    ]},
    {<<"4.2.9">>, [
-     {load_module, emqx_zone, brutal_purge, soft_purge, []},
-   ]},	
+     {load_module, emqx_zone, brutal_purge, soft_purge, []}
+   ]},
    {<<".*">>, []}
  ]
 }.