diff --git a/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-debug.js b/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-debug.js
index 567411c9c6c..ff8632ae13f 100644
--- a/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-debug.js
+++ b/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-debug.js
@@ -26,7 +26,6 @@ YUI.add('moodle-calendar-info', function (Y, NAME) {
  */
 
 var ARIACONTROLS = 'aria-controls',
-    ARIALIVE = 'aria-live',
     BOUNDINGBOX = 'boundingBox',
     CALENDAREVENT = '[data-core_calendar-title]',
     CALENDARTABLE = 'calendartable',
@@ -109,18 +108,7 @@ Y.extend(Info, Y.Base, {
             });
 
             this._panel.get(BOUNDINGBOX)
-                .addClass('calendar-event-panel')
-                .setAttribute(ARIALIVE, 'off');
-
-            this._panel.on('visibleChange', function(e) {
-                // Assume showing.
-                var state = 'assertive';
-                if (e.prevVal && !e.newVal) {
-                    // Hiding.
-                    state = 'off';
-                }
-                this.get(BOUNDINGBOX).setAttribute(ARIALIVE, state);
-            });
+                .addClass('calendar-event-panel');
         }
 
         return this;
diff --git a/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-min.js b/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-min.js
index 05140943668..8c9ec46888e 100644
--- a/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-min.js
+++ b/calendar/yui/build/moodle-calendar-info/moodle-calendar-info-min.js
@@ -1 +1 @@
-YUI.add("moodle-calendar-info",function(e,t){var n="aria-controls",r="aria-live",i="boundingBox",s="[data-core_calendar-title]",o="calendartable",u="core_calendar-",a=".",f="eventcontent",l="delay",c="eventtitle",h="innerHTML",p=function(){p.superclass.constructor.apply(this,arguments)};e.extend(p,e.Base,{_showTimer:null,_hideTimer:null,_panel:null,_currentDay:null,initializer:function(){var t=e.one(e.config.doc.body);t.delegate(["mouseenter","focus"],this._startShow,s,this),t.delegate(["mouseleave","blur"],this._startHide,s,this)},_initOverlay:function(){return this._panel||(this._panel=new e.Overlay({headerContent:e.Node.create('<h2 class="'+c+'"/>'),bodyContent:e.Node.create('<div class="'+f+'"/>'),visible:!1,render:!0}),this._panel.get(i).addClass("calendar-event-panel").setAttribute(r,"off"),this._panel.on("visibleChange",function(e){var t="assertive";e.prevVal&&!e.newVal&&(t="off"),this.get(i).setAttribute(r,t)})),this},_startShow:function(t){if(this._isCurrentDayVisible(t.currentTarget))return;this._cancelHide()._cancelShow()._initOverlay(),this._showTimer=setTimeout(e.bind(function(){var e=t.target.ancestor(s,!0);this._show(e)},this),this.get(l))},_show:function(t){var r=this._panel.get(i),s=e.WidgetPositionAlign,l=t.ancestor(a+o);r.one(a+c).set(h,t.getData(u+"title")),r.one(a+f).set(h,t.getData(u+"popupcontent")),this._currentDay&&this._currentDay.setAttribute(n,null),t.setAttribute(n,t.get("id")),t.appendChild(r),this._currentDay=t,this._panel.constrain(l),this._panel.set("width",l.get("offsetWidth")+"px").align(l,[s.TC,s.TC]).show(),r.setAttribute("tabindex","0").focus()},_cancelShow:function(){return this._showTimer&&clearTimeout(this._showTimer),this},_startHide:function(t){if(t.type==="blur"&&t.currentTarget.contains(t.target))return;this._cancelShow()._cancelHide(),this._hideTimer=setTimeout(e.bind(function(){this._hide()},this),this.get(l))},_hide:function(){this._panel&&this._panel.hide()},_cancelHide:function(){return this._hideTimer&&clearTimeout(this._hideTimer),this},_isCurrentDayVisible:function(e){return!this._panel||!this._panel.get("visible")?!1:e!==this._currentDay?!1:!0}},{NAME:"calendarInfo",ATTRS:{delay:{value:300}}}),e.namespace("M.core_calendar.info").init=function(e){return new p(e)}},"@VERSION@",{requires:["base","node","event-mouseenter","event-key","overlay","moodle-calendar-info-skin"]});
+YUI.add("moodle-calendar-info",function(e,t){var n="aria-controls",r="boundingBox",i="[data-core_calendar-title]",s="calendartable",o="core_calendar-",u=".",a="eventcontent",f="delay",l="eventtitle",c="innerHTML",h=function(){h.superclass.constructor.apply(this,arguments)};e.extend(h,e.Base,{_showTimer:null,_hideTimer:null,_panel:null,_currentDay:null,initializer:function(){var t=e.one(e.config.doc.body);t.delegate(["mouseenter","focus"],this._startShow,i,this),t.delegate(["mouseleave","blur"],this._startHide,i,this)},_initOverlay:function(){return this._panel||(this._panel=new e.Overlay({headerContent:e.Node.create('<h2 class="'+l+'"/>'),bodyContent:e.Node.create('<div class="'+a+'"/>'),visible:!1,render:!0}),this._panel.get(r).addClass("calendar-event-panel")),this},_startShow:function(t){if(this._isCurrentDayVisible(t.currentTarget))return;this._cancelHide()._cancelShow()._initOverlay(),this._showTimer=setTimeout(e.bind(function(){var e=t.target.ancestor(i,!0);this._show(e)},this),this.get(f))},_show:function(t){var i=this._panel.get(r),f=e.WidgetPositionAlign,h=t.ancestor(u+s);i.one(u+l).set(c,t.getData(o+"title")),i.one(u+a).set(c,t.getData(o+"popupcontent")),this._currentDay&&this._currentDay.setAttribute(n,null),t.setAttribute(n,t.get("id")),t.appendChild(i),this._currentDay=t,this._panel.constrain(h),this._panel.set("width",h.get("offsetWidth")+"px").align(h,[f.TC,f.TC]).show(),i.setAttribute("tabindex","0").focus()},_cancelShow:function(){return this._showTimer&&clearTimeout(this._showTimer),this},_startHide:function(t){if(t.type==="blur"&&t.currentTarget.contains(t.target))return;this._cancelShow()._cancelHide(),this._hideTimer=setTimeout(e.bind(function(){this._hide()},this),this.get(f))},_hide:function(){this._panel&&this._panel.hide()},_cancelHide:function(){return this._hideTimer&&clearTimeout(this._hideTimer),this},_isCurrentDayVisible:function(e){return!this._panel||!this._panel.get("visible")?!1:e!==this._currentDay?!1:!0}},{NAME:"calendarInfo",ATTRS:{delay:{value:300}}}),e.namespace("M.core_calendar.info").init=function(e){return new h(e)}},"@VERSION@",{requires:["base","node","event-mouseenter","event-key","overlay","moodle-calendar-info-skin"]});
diff --git a/calendar/yui/build/moodle-calendar-info/moodle-calendar-info.js b/calendar/yui/build/moodle-calendar-info/moodle-calendar-info.js
index 567411c9c6c..ff8632ae13f 100644
--- a/calendar/yui/build/moodle-calendar-info/moodle-calendar-info.js
+++ b/calendar/yui/build/moodle-calendar-info/moodle-calendar-info.js
@@ -26,7 +26,6 @@ YUI.add('moodle-calendar-info', function (Y, NAME) {
  */
 
 var ARIACONTROLS = 'aria-controls',
-    ARIALIVE = 'aria-live',
     BOUNDINGBOX = 'boundingBox',
     CALENDAREVENT = '[data-core_calendar-title]',
     CALENDARTABLE = 'calendartable',
@@ -109,18 +108,7 @@ Y.extend(Info, Y.Base, {
             });
 
             this._panel.get(BOUNDINGBOX)
-                .addClass('calendar-event-panel')
-                .setAttribute(ARIALIVE, 'off');
-
-            this._panel.on('visibleChange', function(e) {
-                // Assume showing.
-                var state = 'assertive';
-                if (e.prevVal && !e.newVal) {
-                    // Hiding.
-                    state = 'off';
-                }
-                this.get(BOUNDINGBOX).setAttribute(ARIALIVE, state);
-            });
+                .addClass('calendar-event-panel');
         }
 
         return this;
diff --git a/calendar/yui/src/info/js/info.js b/calendar/yui/src/info/js/info.js
index b0cf3b68ff4..9efe553b407 100644
--- a/calendar/yui/src/info/js/info.js
+++ b/calendar/yui/src/info/js/info.js
@@ -24,7 +24,6 @@
  */
 
 var ARIACONTROLS = 'aria-controls',
-    ARIALIVE = 'aria-live',
     BOUNDINGBOX = 'boundingBox',
     CALENDAREVENT = '[data-core_calendar-title]',
     CALENDARTABLE = 'calendartable',
@@ -107,18 +106,7 @@ Y.extend(Info, Y.Base, {
             });
 
             this._panel.get(BOUNDINGBOX)
-                .addClass('calendar-event-panel')
-                .setAttribute(ARIALIVE, 'off');
-
-            this._panel.on('visibleChange', function(e) {
-                // Assume showing.
-                var state = 'assertive';
-                if (e.prevVal && !e.newVal) {
-                    // Hiding.
-                    state = 'off';
-                }
-                this.get(BOUNDINGBOX).setAttribute(ARIALIVE, state);
-            });
+                .addClass('calendar-event-panel');
         }
 
         return this;