diff --git a/dns/manifests/init.pp b/dns/manifests/init.pp
index 8b298ea..b2ad76a 100644
--- a/dns/manifests/init.pp
+++ b/dns/manifests/init.pp
@@ -237,7 +237,7 @@ define dns::zone($role = "master", $master = "", $slaves = [], $source = "AUTO")
     case dirname($tmpname) {
         ".":       { $view = "" }
         "default": { $view = "" }
-        default:   { $view = regsubst(dirname($tmpname), "^(.*)", "\1/") }
+        default:   { $view = regsubst(dirname($tmpname), '^(.*)', '\1/') }
     }
     $zone = basename($tmpname)