diff --git a/lib/authentication/interceptor.inc.php b/lib/authentication/interceptor.inc.php
index 59be03f..5c1dc8e 100644
--- a/lib/authentication/interceptor.inc.php
+++ b/lib/authentication/interceptor.inc.php
@@ -24,7 +24,7 @@
  *
  */
 
-require_once(KT_LIB_DIR . "/dispatcher.inc.php");
+require_once(KT_LIB_DIR . '/dispatcher.inc.php');
 
 class KTInterceptor extends KTStandardDispatcher {
     var $sName;