diff --git a/library/Icinga/Data/ConfigObject.php b/library/Icinga/Data/ConfigObject.php
index 2ab5522ab..c9a313444 100644
--- a/library/Icinga/Data/ConfigObject.php
+++ b/library/Icinga/Data/ConfigObject.php
@@ -223,7 +223,7 @@ class ConfigObject extends ArrayDatasource implements Iterator, ArrayAccess
             return $this->data[$key];
         }
 
-        return $default !== null ? $default : null;
+        return $default;
     }
 
     /**