diff --git a/manifests/params.pp b/manifests/params.pp
index f0cdbee..27e6204 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -43,7 +43,7 @@
     'Debian': {
       case $::operatingsystem {
         'Ubuntu': {
-          if versioncmp($::operatingsystemmajrelease, '15.10') > 0 {
+          if versioncmp($::operatingsystemmajrelease, "15.10") > 0 {
             $init_type     = 'systemd'
             $init_script   = '/etc/systemd/system/supervisord.service'
             $init_defaults = false