diff --git a/core/modules/new_widgets/checkbox.js b/core/modules/new_widgets/checkbox.js
index 012b5062a..4166599da 100644
--- a/core/modules/new_widgets/checkbox.js
+++ b/core/modules/new_widgets/checkbox.js
@@ -81,7 +81,6 @@ CheckboxWidget.prototype.execute = function() {
 	// Get the parameters from the attributes
 	this.checkboxTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
 	this.checkboxTag = this.getAttribute("tag");
-	this.checkboxClass = this.getAttribute("class");
 	// Make the child widgets
 	this.makeChildWidgets();
 };