diff --git a/manifests/feature/perfdata.pp b/manifests/feature/perfdata.pp
index 11c0135e4..29dc8cc2d 100644
--- a/manifests/feature/perfdata.pp
+++ b/manifests/feature/perfdata.pp
@@ -48,7 +48,7 @@
   Optional[Stdlib::Absolutepath]      $service_temp_path       = undef,
   Optional[String]                    $host_format_template    = undef,
   Optional[String]                    $service_format_template = undef,
-  Optional[Pattern[/^\d+[ms]*$/]      $rotation_interval       = undef,
+  Optional[Pattern[/^\d+[ms]*$/]]      $rotation_interval       = undef,
 ) {
 
   if ! defined(Class['::icinga2']) {