diff --git a/modules/openstack_project/files/zuul/layout.yaml b/modules/openstack_project/files/zuul/layout.yaml
index eb79bd2c5f..16a682339e 100644
--- a/modules/openstack_project/files/zuul/layout.yaml
+++ b/modules/openstack_project/files/zuul/layout.yaml
@@ -523,7 +523,7 @@ jobs:
   - name: check-tempest-dsvm-neutron-aiopcpu
     voting: false
   - name: gate-designate-devstack-dsvm
-    branch: ^(?!stable/(?:havana|icehouse)).*$
+    branch: ^(?!stable/(havana|icehouse)).*$
 # For Gerrit ver 2.4.x (using maven)
   - name: ^(gate|check)-gerrit-unittests$
     branch: ^openstack/2\.4.*$