diff --git a/classes/handler/Handler.inc.php b/classes/handler/Handler.inc.php
index 5276b4b..9f278db 100644
--- a/classes/handler/Handler.inc.php
+++ b/classes/handler/Handler.inc.php
@@ -16,6 +16,7 @@
 import('lib.pkp.classes.handler.PKPHandler');
 import('classes.handler.validation.HandlerValidatorConference');
 import('classes.handler.validation.HandlerValidatorSchedConf');
+import('classes.handler.validation.HandlerValidatorSubmissionComment');
 
 class Handler extends PKPHandler {
 	function Handler() {