diff --git a/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml b/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml
index 088bc4e2d8664..28b2883093f5c 100644
--- a/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml
+++ b/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml
@@ -237,7 +237,7 @@ objects:
       - name: OPENSHIFT_INSTALL_CLUSTER_NAME
         value: ${NAMESPACE}-${JOB_NAME_HASH}
       - name: OPENSHIFT_INSTALL_BASE_DOMAIN
-        value: origin-ci-int-aws.dev.rhcloud.com
+        value: "${OPENSHIFT_INSTALL_BASE_DOMAIN:-origin-ci-int-aws.dev.rhcloud.com}"
       - name: OPENSHIFT_INSTALL_EMAIL_ADDRESS
         value: test@ci.openshift.io
       - name: OPENSHIFT_INSTALL_PASSWORD
@@ -249,7 +249,7 @@ objects:
       - name: OPENSHIFT_INSTALL_PLATFORM
         value: ${CLUSTER_TYPE}
       - name: OPENSHIFT_INSTALL_AWS_REGION
-        value: us-east-1
+        value: "${OPENSHIFT_INSTALL_AWS_REGION:-us-east-1}"
       - name: OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE
         value: ${RELEASE_IMAGE_LATEST}
       - name: OPENSHIFT_INSTALL_OPENSTACK_IMAGE
diff --git a/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml b/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml
index 6826b6e842c32..dc7d4b392daff 100644
--- a/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml
+++ b/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml
@@ -219,7 +219,7 @@ objects:
       - name: OPENSHIFT_INSTALL_CLUSTER_NAME
         value: ${NAMESPACE}-${JOB_NAME_HASH}
       - name: OPENSHIFT_INSTALL_BASE_DOMAIN
-        value: origin-ci-int-aws.dev.rhcloud.com
+        value: "${OPENSHIFT_INSTALL_BASE_DOMAIN:-origin-ci-int-aws.dev.rhcloud.com}"
       - name: OPENSHIFT_INSTALL_EMAIL_ADDRESS
         value: test@ci.openshift.io
       - name: OPENSHIFT_INSTALL_PASSWORD
@@ -231,7 +231,7 @@ objects:
       - name: OPENSHIFT_INSTALL_PLATFORM
         value: ${CLUSTER_TYPE}
       - name: OPENSHIFT_INSTALL_AWS_REGION
-        value: us-east-1
+        value: "${OPENSHIFT_INSTALL_AWS_REGION:-us-east-1}"
       - name: OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE
         value: ${RELEASE_IMAGE_LATEST}
       - name: OPENSHIFT_INSTALL_OPENSTACK_IMAGE