diff --git a/manifests/firewall.pp b/manifests/firewall.pp
index dd4c24b39248187d991b2d4c50fe77f6b866cade..1ca29b66f580e38f2782b8e0c8df960bbad13b3e 100644
--- a/manifests/firewall.pp
+++ b/manifests/firewall.pp
@@ -3,6 +3,7 @@ class puppet_cwsens::firewall{
 
   $mqtt_rule = @("EOT"/L)
     require services
+    service mqtt { tcp/1883 }
     policy ipsum-mqtt chain ipsum-mqtt is
       accept service:mqtt from class:liu-nets
     end policy