diff --git a/manifests/params.pp b/manifests/params.pp
index 406ed709..d3359249 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -52,7 +52,7 @@ class tempest::params {
         'python3-virtualenv',
         'python3-pip',
       ]
-      if $::os_package_type == 'debian' {
+      if $::operatingsystem == 'Debian' {
         $python_telemetry_tests  = 'telemetry-tempest-plugin'
         $python_cinder_tests     = 'cinder-tempest-plugin'
         $python_designate_tests  = 'designate-tempest-plugin'