diff --git a/inventory/group_vars/qadevel b/inventory/group_vars/qadevel
index 78966e38df..49dac6f408 100644
--- a/inventory/group_vars/qadevel
+++ b/inventory/group_vars/qadevel
@@ -46,7 +46,7 @@ slave_user: buildslave
 
 mariadb_host: localhost
 mariadb_config: my.cnf.phabricator
-mariadb_user: '{{ qadevel__mariadb_user }}'
+mariadb_user: '{{ qadevel_mariadb_user }}'
 mariadb_password: '{{ qadevel_mariadb_password }}'