diff --git a/manifests/init.pp b/manifests/init.pp
index d3c16da..40b39d6 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -64,7 +64,7 @@ class bind (
         content => template('bind/named.conf.erb'),
     }
 
-    if $::bind::defaults::include_default_zones and $::bind::defaults::default_zones_source {
+    if $include_default_zones and $::bind::defaults::default_zones_source {
         file { $::bind::defaults::default_zones_include:
             source => $::bind::defaults::default_zones_source,
         }
diff --git a/metadata.json b/metadata.json
index ee76472..412112f 100644
--- a/metadata.json
+++ b/metadata.json
@@ -28,7 +28,7 @@
   ],
   "dependencies": [
     { "name": "puppetlabs/stdlib", "version_requirement": ">=4.15 < 5.0.0" },
-    { "name": "puppetlabs/concat", "version_requirement": ">=2.0.0 < 3.0.0" }
+    { "name": "puppetlabs/concat", "version_requirement": ">=2.2.1 < 3.0.0" }
   ],
   "data_provider": "hiera"
 }