diff --git a/apps/emqx_dashboard/src/emqx_dashboard.erl b/apps/emqx_dashboard/src/emqx_dashboard.erl
index e79b0210c..07d959b8e 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard.erl
@@ -151,9 +151,9 @@ authorize(Req) ->
                 ok ->
                     ok;
                 {error, token_timeout} ->
-                    {401, <<"TOKEN_TIME_OUT">>, <<"Token expired, get new token by POST /login">>};
+                    {401, 'TOKEN_TIME_OUT', <<"Token expired, get new token by POST /login">>};
                 {error, not_found} ->
-                    {401, <<"BAD_TOKEN">>, <<"Get a token by POST /login">>}
+                    {401, 'BAD_TOKEN', <<"Get a token by POST /login">>}
             end;
         _ ->
             return_unauthorized(<<"AUTHORIZATION_HEADER_ERROR">>,