diff --git a/tasks/install.yml b/tasks/install.yml
index d9c8908..b729e47 100644
--- a/tasks/install.yml
+++ b/tasks/install.yml
@@ -55,9 +55,7 @@
   iptables_raw:
     name: allow_mttq_port
     state: present
-    rules:
-      - '-A INPUT -m state --state NEW -p tcp --dport {{ mosquitto_port }} -j ACCEPT'
-      - '-A OUTPUT -m state --state NEW -p tcp --dport {{ mosquitto_port }} -j ACCEPT'
+    rules: '-A INPUT -m state --state NEW -p tcp --dport {{ mosquitto_port }} -j ACCEPT'
 
 - name: Copy systemd unit files
   template: