diff --git a/templates/monitor/sunetdrive_sites.cfg.erb b/templates/monitor/sunetdrive_sites.cfg.erb
index 71cae06..8f7f6b2 100644
--- a/templates/monitor/sunetdrive_sites.cfg.erb
+++ b/templates/monitor/sunetdrive_sites.cfg.erb
@@ -190,7 +190,7 @@ define service {
 <% else -%>
 <% version_variable = 'nextcloud_version_prod_' << cur_cust -%>
 <% end -%>
-<% version = scope.lookupvar(version_variable) -%>
+<% version = scope.lookupvar(version_variable) << '' -%>
 <% version_truncated = version.gsub(/-[0-9]+/,'') -%>
   check_command         check_nextcloud_version!'<%= version_truncated %>'
   check_interval        5