diff --git a/js/table-selectable-lines.js b/js/table-selectable-lines.js
index cde78b8db..5a2d0bae2 100644
--- a/js/table-selectable-lines.js
+++ b/js/table-selectable-lines.js
@@ -75,7 +75,7 @@ $(document).ready(function () {
 	});
 
 	// check_all event is fired for tableSorter JQuery plugin
-	$(document).on("check_all", TABLE_SELECTOR, function () {
+	$(document).on("check_all", TABLE_SELECTOR, function (event) {
 		var $eventTarget = $(event.target);
 		if (!$eventTarget.has(LINE_WITH_INPUT_IN_FIRST_CELL_SELECTOR))
 		// Originally we had :has in the handler selector but performances were very bad :(