diff --git a/library/Director/IcingaConfig/IcingaConfigHelper.php b/library/Director/IcingaConfig/IcingaConfigHelper.php
index 10aacae1..b6f45a73 100644
--- a/library/Director/IcingaConfig/IcingaConfigHelper.php
+++ b/library/Director/IcingaConfig/IcingaConfigHelper.php
@@ -2,6 +2,8 @@
 
 namespace Icinga\Module\Director\IcingaConfig;
 
+use Icinga\Exception\ProgrammingError;
+
 class IcingaConfigHelper
 {
     /**