diff --git a/modules/openstack_project/manifests/single_use_slave.pp b/modules/openstack_project/manifests/single_use_slave.pp
index eba1f51572..0bc8f354cb 100644
--- a/modules/openstack_project/manifests/single_use_slave.pp
+++ b/modules/openstack_project/manifests/single_use_slave.pp
@@ -17,7 +17,8 @@ class openstack_project::single_use_slave (
   $automatic_upgrades = false,
   $all_mysql_privs = false,
   $enable_unbound = true,
-  $ssh_key = $openstack_project::jenkins_ssh_key
+  $ssh_key = $openstack_project::jenkins_ssh_key,
+  $project_config_repo = 'https://git.openstack.org/openstack-infra/project-config',
 ) inherits openstack_project {
   class { 'openstack_project::template':
     certname            => $certname,
@@ -44,8 +45,9 @@ class openstack_project::single_use_slave (
   }
 
   class { 'openstack_project::slave_common':
-    include_pypy    => $include_pypy,
-    sudo            => $sudo,
+    include_pypy        => $include_pypy,
+    sudo                => $sudo,
+    project_config_repo => $project_config_repo,
   }
 
   if (! $thin) {
diff --git a/modules/openstack_project/manifests/slave_common.pp b/modules/openstack_project/manifests/slave_common.pp
index bb18452d2e..9f93d15735 100644
--- a/modules/openstack_project/manifests/slave_common.pp
+++ b/modules/openstack_project/manifests/slave_common.pp
@@ -5,7 +5,7 @@
 class openstack_project::slave_common(
   $include_pypy = false,
   $sudo         = false,
-  $project_config_repo = 'https://git.openstack.org/openstack-infra/project-config',
+  $project_config_repo = '',
 ){
   vcsrepo { '/opt/requirements':
     ensure   => latest,