diff --git a/iptables/templates/iptables-rules.v4.j2 b/iptables/templates/iptables-rules.v4.j2
index 63c099d..1b55c9c 100644
--- a/iptables/templates/iptables-rules.v4.j2
+++ b/iptables/templates/iptables-rules.v4.j2
@@ -144,12 +144,14 @@
 {% endif %}
 {% endif %}
 
-{% if munin_server is defined and configure_munin is defined and configure_munin %}
+{% if configure_munin %}
+{% if munin_server %}
 {% for ip in munin_server %}
 # Munin
 -A INPUT -m state --state NEW -s {{ ip }} -p tcp -m tcp --dport 4949 -j ACCEPT
 {% endfor %}
 {% endif %}
+{% endif %}
 
 {% if ganglia_enabled %}
 {% if ganglia_gmond_cluster_port is defined %}