diff --git a/priv/emqx.schema b/priv/emqx.schema
index 944541d76..f48386461 100644
--- a/priv/emqx.schema
+++ b/priv/emqx.schema
@@ -2344,7 +2344,7 @@ end}.
 {translation, "emqx.shared_subscription_strategy_per_group", fun(Conf) ->
   Conf0 = cuttlefish_variable:filter_by_prefix("broker", Conf),
   Groups = lists:filtermap(fun({["broker", Group, "shared_subscription_strategy"], Strategy}) ->
-                       {true, {Group, Strategy}};
+                       {true, {Group, list_to_binary(Strategy)}};
                      (_) ->
                        false
                   end, Conf0),