diff --git a/src/Exception/ExceptionInterface.php b/src/Exception/ExceptionInterface.php
index 089d3ccd1..35d4fdcd2 100644
--- a/src/Exception/ExceptionInterface.php
+++ b/src/Exception/ExceptionInterface.php
@@ -11,8 +11,6 @@
 
 /**
  * Marker Interface for Solarium exceptions.
- *
- * For background info see http://ralphschindler.com/2010/09/15/exception-best-practices-in-php-5-3
  */
 interface ExceptionInterface extends \Throwable
 {