diff --git a/lib/yui/build/moodle-core-notification/moodle-core-notification-debug.js b/lib/yui/build/moodle-core-notification/moodle-core-notification-debug.js
index 3a222456c3f..b6393231dca 100644
--- a/lib/yui/build/moodle-core-notification/moodle-core-notification-debug.js
+++ b/lib/yui/build/moodle-core-notification/moodle-core-notification-debug.js
@@ -24,7 +24,7 @@ YUI.add('moodle-core-notification', function (Y, NAME) {
  * @deprecated
  */
 Y.log("The moodle-core-notification parent module has been deprecated. " +
-        "Please use one of its' subclasses instead.", 'moodle-core-notification', 'warn');
+        "Please use one of its subclasses instead.", 'moodle-core-notification', 'warn');
 
 
 }, '@VERSION@', {
diff --git a/lib/yui/src/notification/js/notification.js b/lib/yui/src/notification/js/notification.js
index 86559edab74..e728bbc8e51 100644
--- a/lib/yui/src/notification/js/notification.js
+++ b/lib/yui/src/notification/js/notification.js
@@ -22,4 +22,4 @@
  * @deprecated
  */
 Y.log("The moodle-core-notification parent module has been deprecated. " +
-        "Please use one of its' subclasses instead.", 'moodle-core-notification', 'warn');
+        "Please use one of its subclasses instead.", 'moodle-core-notification', 'warn');