diff --git a/blocks/community/yui/comments/comments.js b/blocks/community/yui/comments/comments.js
index b2b1f536455..155a823c570 100644
--- a/blocks/community/yui/comments/comments.js
+++ b/blocks/community/yui/comments/comments.js
@@ -31,13 +31,6 @@ YUI.add('moodle-block_community-comments', function(Y) {
                 this.overlays[commentid].render();
                 this.overlays[commentid].hide();
 
-                // position the overlay in the middle of the web browser window
-                var WidgetPositionAlign = Y.WidgetPositionAlign;
-                this.overlays[commentid].set("align", {
-                    node:"", //empty => viewport
-                    points:[WidgetPositionAlign.CC, WidgetPositionAlign.CC]
-                });
-
                 Y.one('#comments-'+commentid).on('click', this.show, this, commentid);
             }
 
diff --git a/enrol/yui/notification/notification.js b/enrol/yui/notification/notification.js
index f1ad0fb1d27..1c7e6da721d 100644
--- a/enrol/yui/notification/notification.js
+++ b/enrol/yui/notification/notification.js
@@ -81,8 +81,9 @@ Y.extend(DIALOGUE, Y.Overlay, {
         if (hidden) {
             bb.setStyle('top', '-1000px').removeClass(DIALOGUE_PREFIX+'-hidden');
         }
-        var x = Math.round((bb.get('winWidth') - bb.get('offsetWidth'))/2);
-        var y = Math.round((bb.get('winHeight') - bb.get('offsetHeight'))/2)+Y.one(window).get('scrollTop');
+        var x = Math.max(Math.round((bb.get('winWidth') - bb.get('offsetWidth'))/2), 15);
+        var y = Math.max(Math.round((bb.get('winHeight') - bb.get('offsetHeight'))/2), 15) + Y.one(window).get('scrollTop');
+
         if (hidden) {
             bb.addClass(DIALOGUE_PREFIX+'-hidden');
         }