diff --git a/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-debug.js b/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-debug.js
index ba14c132c16..21c5cdabfa0 100644
--- a/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-debug.js
+++ b/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-debug.js
@@ -65,7 +65,7 @@ Y.namespace('M.atto_rtl').Button = Y.Base.create('button', Y.M.editor_atto.Edito
      */
     _toggleRTL: function(e, direction) {
         var host = this.get('host'),
-            sourceSelection = rangy.saveSelection(),
+            sourceSelection = window.rangy.saveSelection(),
             selection = host.getSelection(),
             newDirection = {
                 rtl: 'ltr',
@@ -84,7 +84,7 @@ Y.namespace('M.atto_rtl').Button = Y.Base.create('button', Y.M.editor_atto.Edito
             }
 
             // Change selection from the containing paragraph to the original one.
-            rangy.restoreSelection(sourceSelection);
+            window.rangy.restoreSelection(sourceSelection);
             // Mark the text as having been updated.
             this.markUpdated();
         }
diff --git a/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-min.js b/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-min.js
index 51d0be479a8..21c50882b70 100644
--- a/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-min.js
+++ b/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button-min.js
@@ -1 +1 @@
-YUI.add("moodle-atto_rtl-button",function(e,t){e.namespace("M.atto_rtl").Button=e.Base.create("button",e.M.editor_atto.EditorPlugin,[],{initializer:function(){var e;e="ltr",this.addButton({icon:"e/left_to_right",title:e,buttonName:e,callback:this._toggleRTL,callbackArgs:e}),e="rtl",this.addButton({icon:"e/right_to_left",title:e,buttonName:e,callback:this._toggleRTL,callbackArgs:e})},_toggleRTL:function(e,t){var n=this.get("host"),r=rangy.saveSelection(),i=n.getSelection(),s={rtl:"ltr",ltr:"rtl"};if(i){var o=n.formatSelectionBlock(),u=o.getDOMNode(),a=u.getAttribute("dir");a===t?u.setAttribute("dir",s[t]):u.setAttribute("dir",t),rangy.restoreSelection(r),this.markUpdated()}}})},"@VERSION@",{requires:["moodle-editor_atto-plugin"]});
+YUI.add("moodle-atto_rtl-button",function(e,t){e.namespace("M.atto_rtl").Button=e.Base.create("button",e.M.editor_atto.EditorPlugin,[],{initializer:function(){var e;e="ltr",this.addButton({icon:"e/left_to_right",title:e,buttonName:e,callback:this._toggleRTL,callbackArgs:e}),e="rtl",this.addButton({icon:"e/right_to_left",title:e,buttonName:e,callback:this._toggleRTL,callbackArgs:e})},_toggleRTL:function(e,t){var n=this.get("host"),r=window.rangy.saveSelection(),i=n.getSelection(),s={rtl:"ltr",ltr:"rtl"};if(i){var o=n.formatSelectionBlock(),u=o.getDOMNode(),a=u.getAttribute("dir");a===t?u.setAttribute("dir",s[t]):u.setAttribute("dir",t),window.rangy.restoreSelection(r),this.markUpdated()}}})},"@VERSION@",{requires:["moodle-editor_atto-plugin"]});
diff --git a/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button.js b/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button.js
index ba14c132c16..21c5cdabfa0 100644
--- a/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button.js
+++ b/lib/editor/atto/plugins/rtl/yui/build/moodle-atto_rtl-button/moodle-atto_rtl-button.js
@@ -65,7 +65,7 @@ Y.namespace('M.atto_rtl').Button = Y.Base.create('button', Y.M.editor_atto.Edito
      */
     _toggleRTL: function(e, direction) {
         var host = this.get('host'),
-            sourceSelection = rangy.saveSelection(),
+            sourceSelection = window.rangy.saveSelection(),
             selection = host.getSelection(),
             newDirection = {
                 rtl: 'ltr',
@@ -84,7 +84,7 @@ Y.namespace('M.atto_rtl').Button = Y.Base.create('button', Y.M.editor_atto.Edito
             }
 
             // Change selection from the containing paragraph to the original one.
-            rangy.restoreSelection(sourceSelection);
+            window.rangy.restoreSelection(sourceSelection);
             // Mark the text as having been updated.
             this.markUpdated();
         }
diff --git a/lib/editor/atto/plugins/rtl/yui/src/button/js/button.js b/lib/editor/atto/plugins/rtl/yui/src/button/js/button.js
index 2fb15438e66..88bf7c0bcbe 100644
--- a/lib/editor/atto/plugins/rtl/yui/src/button/js/button.js
+++ b/lib/editor/atto/plugins/rtl/yui/src/button/js/button.js
@@ -63,7 +63,7 @@ Y.namespace('M.atto_rtl').Button = Y.Base.create('button', Y.M.editor_atto.Edito
      */
     _toggleRTL: function(e, direction) {
         var host = this.get('host'),
-            sourceSelection = rangy.saveSelection(),
+            sourceSelection = window.rangy.saveSelection(),
             selection = host.getSelection(),
             newDirection = {
                 rtl: 'ltr',
@@ -82,7 +82,7 @@ Y.namespace('M.atto_rtl').Button = Y.Base.create('button', Y.M.editor_atto.Edito
             }
 
             // Change selection from the containing paragraph to the original one.
-            rangy.restoreSelection(sourceSelection);
+            window.rangy.restoreSelection(sourceSelection);
             // Mark the text as having been updated.
             this.markUpdated();
         }