diff --git a/global/overlay/etc/puppet/modules/soc/manifests/intelmq.pp b/global/overlay/etc/puppet/modules/soc/manifests/intelmq.pp
index dab45ac..e0b24ef 100644
--- a/global/overlay/etc/puppet/modules/soc/manifests/intelmq.pp
+++ b/global/overlay/etc/puppet/modules/soc/manifests/intelmq.pp
@@ -45,7 +45,7 @@ class soc::intelmq(
 
   exec { '/opt/intelmq/venv/bin/intelmqsetup --state-file /opt/intelmq/.setup_state':
     creates => '/opt/intelmq/.setup_state'
-    returns => [0, 1],
+    returns => ['0', '1', ],
   }
 
   file { '/etc/sudoers.d/01_intelmq-api':