diff --git a/manifests/firewall.pp b/manifests/firewall.pp
index ef361a11ee37bac9c2dad846be9639fef7fc916b..dd4c24b39248187d991b2d4c50fe77f6b866cade 100644
--- a/manifests/firewall.pp
+++ b/manifests/firewall.pp
@@ -12,6 +12,6 @@ class puppet_cwsens::firewall{
   ::server_firewall::constricto_chain{'ipsum-mqtt': }
   ::server_firewall::rules_file { '55-permit-ipsum-mqtt.rules':
     content => $mqtt_rule,
-    require => ::server_firewall::Constricto_chain['ipsum-mqtt'],
+    require => ::Server_firewall::Constricto_chain['ipsum-mqtt'],
   }
 }