diff --git a/devstack/lib/zun b/devstack/lib/zun
index a90668c7f..c45b3a376 100644
--- a/devstack/lib/zun
+++ b/devstack/lib/zun
@@ -32,8 +32,8 @@ set +o xtrace
 ZUN_REPO=${ZUN_REPO:-${GIT_BASE}/openstack/zun.git}
 ZUN_BRANCH=${ZUN_BRANCH:-master}
 ZUN_DIR=$DEST/zun
-ZUN_TEMPEST_PLUGIN_REPO=${ZUN_REPO:-${GIT_BASE}/openstack/zun-tempest-plugin.git}
-ZUN_TEMPEST_PLUGIN_BRANCH=${ZUN_BRANCH:-master}
+ZUN_TEMPEST_PLUGIN_REPO=${ZUN_TEMPEST_PLUGIN_REPO:-${GIT_BASE}/openstack/zun-tempest-plugin.git}
+ZUN_TEMPEST_PLUGIN_BRANCH=${ZUN_TEMPEST_PLUGIN_BRANCH:-master}
 ZUN_TEMPEST_PLUGIN_DIR=$DEST/zun-tempest-plugin
 
 GITREPO["python-zunclient"]=${ZUNCLIENT_REPO:-${GIT_BASE}/openstack/python-zunclient.git}