diff --git a/jenkins/jobs/designate.yaml b/jenkins/jobs/designate.yaml
index 6b32565969..a658b4abd0 100644
--- a/jenkins/jobs/designate.yaml
+++ b/jenkins/jobs/designate.yaml
@@ -39,7 +39,7 @@
           fi
 
           if [ "{special}" == "-identity-v3-only" ] ; then
-              export DEVSTACK_LOCAL_CONFIG="ENABLE_IDENTITY_V2=False"
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"ENABLE_IDENTITY_V2=False"
           fi
 
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh