diff --git a/jenkins/jobs/puppet-module-jobs.yaml b/jenkins/jobs/puppet-module-jobs.yaml
index 72fcbcb677..9b3f2a4639 100644
--- a/jenkins/jobs/puppet-module-jobs.yaml
+++ b/jenkins/jobs/puppet-module-jobs.yaml
@@ -345,8 +345,7 @@
 
 - job-group:
     name: 'puppet-beaker-jobs-trusty'
-    ostype:
-      - trusty
+    ostype: trusty
     node:
       - ubuntu-trusty
     jobs:
@@ -354,8 +353,7 @@
 
 - job-group:
     name: 'puppet-beaker-jobs-centos7'
-    ostype:
-      - centos7
+    ostype: centos7
     node:
       - devstack-centos7
     jobs: