diff --git a/test/emqx_mqtt_caps_SUITE.erl b/test/emqx_mqtt_caps_SUITE.erl
index 58170a181..925e9af44 100644
--- a/test/emqx_mqtt_caps_SUITE.erl
+++ b/test/emqx_mqtt_caps_SUITE.erl
@@ -62,5 +62,5 @@ t_check_sub(_) ->
         ?assertEqual({error, ?RC_SHARED_SUBSCRIPTIONS_NOT_SUPPORTED},
                     emqx_mqtt_caps:check_sub(ClientInfo, <<"topic">>, SubOpts#{share => true}))
     after
-        emqx_zone:unset_env(zone, '$mqtt_pub_caps')
+        emqx_zone:unset_env(zone, '$mqtt_sub_caps')
     end.