diff --git a/manifests/wsgi/apache.pp b/manifests/wsgi/apache.pp
index f40fe0f78..7f4ea877d 100644
--- a/manifests/wsgi/apache.pp
+++ b/manifests/wsgi/apache.pp
@@ -207,7 +207,7 @@ class keystone::wsgi::apache (
   include ::apache
   include ::apache::mod::wsgi
 
-  $servername_admin_real = pick($servername_admin, $servername)
+  $servername_admin_real = pick_default($servername_admin, $servername)
 
   if $ssl {
     include ::apache::mod::ssl