diff --git a/rel/reltool.config b/rel/reltool.config
index 5c302d60b..933300fd3 100644
--- a/rel/reltool.config
+++ b/rel/reltool.config
@@ -5,6 +5,8 @@
        {erts, [{mod_cond, derived}, {app_file, strip}]},
        {app_file, strip},
        {rel, "emqttd", "0.7.0",
+        [
+         kernel,
          stdlib,
          sasl,
 		 syntax_tools,