diff --git a/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-debug.js b/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-debug.js
index 931ed185700..ceb31ce92c2 100644
--- a/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-debug.js
+++ b/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-debug.js
@@ -102,7 +102,7 @@ Y.namespace('M.atto_backcolor').Button = Y.Base.create('button', Y.M.editor_atto
         }
 
         this.editor.all('.' + classname).each(function (node) {
-            node.setAttribute('class', 'fontcolor ' + backColorClass);
+            node.setAttribute('class', 'backcolor ' + backColorClass);
         }, this);
 
         host.setSelection(originalSelection);
diff --git a/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-min.js b/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-min.js
index 22659297db3..4816c0d25c8 100644
--- a/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-min.js
+++ b/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button-min.js
@@ -1 +1 @@
-YUI.add("moodle-atto_backcolor-button",function(e,t){var n=[{name:"white"},{name:"red"},{name:"yellow"},{name:"green"},{name:"blue"},{name:"black"}];e.namespace("M.atto_backcolor").Button=e.Base.create("button",e.M.editor_atto.EditorPlugin,[],{initializer:function(){var t=[];e.Array.each(n,function(e){t.push({text:'<div class="'+e.name+'"></div>',callbackArgs:e.className||e.name})}),this.addToolbarMenu({icon:"e/text_highlight",overlayWidth:"4",globalItemConfig:{callback:this._changeStyle},items:t})},_changeStyle:function(t,n){var r=this.get("host"),i=r.PLACEHOLDER_CLASS,s=r.getSelection(),o=rangy.createCssClassApplier(i,{normalize:!0});o.applyToSelection();if(!e.one("."+i)){var u=s[0],a=u.createContextualFragment('<span class="'+i+'">&nbsp;</span>'),f=rangy.createRange(),l;u.insertNode(a.lastChild),u.collapse(),f.selectNodeContents(e.one("."+i).getDOMNode()),l=rangy.getSelection(),l.setSingleRange(f),s=l.getAllRanges()}this.editor.all("."+i).each(function(e){e.setAttribute("class","fontcolor "+n)},this),r.setSelection(s),this.markUpdated()}})},"@VERSION@");
+YUI.add("moodle-atto_backcolor-button",function(e,t){var n=[{name:"white"},{name:"red"},{name:"yellow"},{name:"green"},{name:"blue"},{name:"black"}];e.namespace("M.atto_backcolor").Button=e.Base.create("button",e.M.editor_atto.EditorPlugin,[],{initializer:function(){var t=[];e.Array.each(n,function(e){t.push({text:'<div class="'+e.name+'"></div>',callbackArgs:e.className||e.name})}),this.addToolbarMenu({icon:"e/text_highlight",overlayWidth:"4",globalItemConfig:{callback:this._changeStyle},items:t})},_changeStyle:function(t,n){var r=this.get("host"),i=r.PLACEHOLDER_CLASS,s=r.getSelection(),o=rangy.createCssClassApplier(i,{normalize:!0});o.applyToSelection();if(!e.one("."+i)){var u=s[0],a=u.createContextualFragment('<span class="'+i+'">&nbsp;</span>'),f=rangy.createRange(),l;u.insertNode(a.lastChild),u.collapse(),f.selectNodeContents(e.one("."+i).getDOMNode()),l=rangy.getSelection(),l.setSingleRange(f),s=l.getAllRanges()}this.editor.all("."+i).each(function(e){e.setAttribute("class","backcolor "+n)},this),r.setSelection(s),this.markUpdated()}})},"@VERSION@");
diff --git a/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button.js b/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button.js
index 931ed185700..ceb31ce92c2 100644
--- a/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button.js
+++ b/lib/editor/atto/plugins/backcolor/yui/build/moodle-atto_backcolor-button/moodle-atto_backcolor-button.js
@@ -102,7 +102,7 @@ Y.namespace('M.atto_backcolor').Button = Y.Base.create('button', Y.M.editor_atto
         }
 
         this.editor.all('.' + classname).each(function (node) {
-            node.setAttribute('class', 'fontcolor ' + backColorClass);
+            node.setAttribute('class', 'backcolor ' + backColorClass);
         }, this);
 
         host.setSelection(originalSelection);
diff --git a/lib/editor/atto/plugins/backcolor/yui/src/button/js/button.js b/lib/editor/atto/plugins/backcolor/yui/src/button/js/button.js
index ba13c36e4cf..4bdffcc24b0 100644
--- a/lib/editor/atto/plugins/backcolor/yui/src/button/js/button.js
+++ b/lib/editor/atto/plugins/backcolor/yui/src/button/js/button.js
@@ -100,7 +100,7 @@ Y.namespace('M.atto_backcolor').Button = Y.Base.create('button', Y.M.editor_atto
         }
 
         this.editor.all('.' + classname).each(function (node) {
-            node.setAttribute('class', 'fontcolor ' + backColorClass);
+            node.setAttribute('class', 'backcolor ' + backColorClass);
         }, this);
 
         host.setSelection(originalSelection);