diff --git a/config/release/tripleo-ci/CentOS-7/stein.yml b/config/release/tripleo-ci/CentOS-7/stein.yml
index 7134fa81c..a0720e562 100644
--- a/config/release/tripleo-ci/CentOS-7/stein.yml
+++ b/config/release/tripleo-ci/CentOS-7/stein.yml
@@ -20,7 +20,7 @@ dlrn_hash_tag: current-tripleo
 dlrn_hash_tag_newest: current
 dlrn_baseurl: "https://trunk.rdoproject.org/{{ distro_ver }}-{{ release }}"
 docker_registry_host: >-
-  "{{ job.build_container_images|default(false)|bool | ternary('127.0.0.1:5001', job.alt_container_registry|default('trunk.registry.rdoproject.org')) }}"
+  {{ job.build_container_images|default(false)|bool | ternary('127.0.0.1:5001', job.alt_container_registry|default('trunk.registry.rdoproject.org')) }}
 docker_registry_namespace: "tripleo{{ release }}"
 docker_image_tag: "{{ dlrn_hash|default(dlrn_hash_tag) }}"
 docker_openshift_tag: v3.11.0