diff --git a/library/Icinga/Protocol/Statusdat/Reader.php b/library/Icinga/Protocol/Statusdat/Reader.php
index 99aeb7d17..4e55a69c0 100644
--- a/library/Icinga/Protocol/Statusdat/Reader.php
+++ b/library/Icinga/Protocol/Statusdat/Reader.php
@@ -31,13 +31,14 @@ namespace Icinga\Protocol\Statusdat;
 
 use Icinga\Util\File;
 use Icinga\Logger\Logger;
+use Icinga\Data\DatasourceInterface;
 use Icinga\Exception\ConfigurationError;
 
 /**
  * Class Reader
  * @package Icinga\Protocol\Statusdat
  */
-class Reader implements IReader
+class Reader implements IReader, DatasourceInterface
 {
     /**
      *  The default lifetime of the cache in milliseconds