diff --git a/manifests/params.pp b/manifests/params.pp
index e9ef09c28996cab43c855f340d7d800fea73a025..7cdb79a97e78d7a26338098d6778229632a9f1da 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -32,8 +32,7 @@ class postfix::params {
         fail "Unsupported OS '${::operatingsystem}'"
       }
 
-      $master_os_template = "${module_name}/master.cf.${::operatingsystem}
-                             ${::operatingsystemrelease}.erb"
+      $master_os_template = "${module_name}/master.cf.${::operatingsystem}${::operatingsystemrelease}.erb"
     }
 
     default: {