diff --git a/manifests/site.pp b/manifests/site.pp
index 016c787..826961b 100644
--- a/manifests/site.pp
+++ b/manifests/site.pp
@@ -77,7 +77,7 @@ node compute {
   class { "nova":
     verbose             => $verbose,
     sql_connection      => "mysql://${db_username}:${db_password}@${db_host}/${db_name}",
-    image_service       => $image_service,
+    image_service       => 'nova.image.glance.GlanceImageService',
     glance_api_servers  => $glance_api_servers,
     glance_host         => $glance_host,
     glance_port         => $glance_port,