diff --git a/manifests/init.pp b/manifests/init.pp
index f7a724a..75ec30c 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -46,7 +46,7 @@ class etherpad_lite (
     revision => $nodejs_version,
     require  => [
         Package['git'],
-        File["${base_install_dir}"],
+        File[$base_install_dir],
     ],
   }