diff --git a/core/modules/widgets/checkbox.js b/core/modules/widgets/checkbox.js
index 85ea35242..cd6ff2045 100644
--- a/core/modules/widgets/checkbox.js
+++ b/core/modules/widgets/checkbox.js
@@ -58,7 +58,7 @@ CheckboxWidget.prototype.getValue = function() {
 	var tiddler = this.wiki.getTiddler(this.checkboxTitle);
 	if(tiddler) {
 		if(this.checkboxTag) {
-			if(this.checkboxInvert) {
+			if(this.checkboxInvertTag) {
 				return !tiddler.hasTag(this.checkboxTag);
 			} else {
 				return tiddler.hasTag(this.checkboxTag);
@@ -96,7 +96,7 @@ CheckboxWidget.prototype.handleChangeEvent = function(event) {
 		newFields = {title: this.checkboxTitle},
 		hasChanged = false,
 		tagCheck = false;
-	if(this.checkboxTag && this.checkboxInvert === "yes") {
+	if(this.checkboxTag && this.checkboxInvertTag === "yes") {
 		tagCheck = tiddler.hasTag(this.checkboxTag) === checked;
 	} else {
 		tagCheck = tiddler.hasTag(this.checkboxTag) !== checked;
@@ -108,9 +108,9 @@ CheckboxWidget.prototype.handleChangeEvent = function(event) {
 		if(pos !== -1) {
 			newFields.tags.splice(pos,1);
 		}
-		if(this.checkboxInvert === "yes" && !checked) {
+		if(this.checkboxInvertTag === "yes" && !checked) {
 			newFields.tags.push(this.checkboxTag);
-		} else if(this.checkboxInvert !== "yes" && checked) {
+		} else if(this.checkboxInvertTag !== "yes" && checked) {
 			newFields.tags.push(this.checkboxTag);
 		}
 		hasChanged = true;
@@ -140,7 +140,7 @@ CheckboxWidget.prototype.execute = function() {
 	this.checkboxUnchecked = this.getAttribute("unchecked");
 	this.checkboxDefault = this.getAttribute("default");
 	this.checkboxClass = this.getAttribute("class","");
-	this.checkboxInvert = this.getAttribute("invert","");
+	this.checkboxInvertTag = this.getAttribute("invertTag","");
 	// Make the child widgets
 	this.makeChildWidgets();
 };
@@ -150,7 +150,7 @@ Selectively refreshes the widget if needed. Returns true if the widget or any of
 */
 CheckboxWidget.prototype.refresh = function(changedTiddlers) {
 	var changedAttributes = this.computeAttributes();
-	if(changedAttributes.tiddler || changedAttributes.tag || changedAttributes.field || changedAttributes.checked || changedAttributes.unchecked || changedAttributes["default"] || changedAttributes["class"]) {
+	if(changedAttributes.tiddler || changedAttributes.tag || changedAttributes.invertTag || changedAttributes.field || changedAttributes.checked || changedAttributes.unchecked || changedAttributes["default"] || changedAttributes["class"]) {
 		this.refreshSelf();
 		return true;
 	} else {
diff --git a/editions/tw5.com/tiddlers/widgets/CheckboxWidget.tid b/editions/tw5.com/tiddlers/widgets/CheckboxWidget.tid
index 49a7f423d..edde1467d 100644
--- a/editions/tw5.com/tiddlers/widgets/CheckboxWidget.tid
+++ b/editions/tw5.com/tiddlers/widgets/CheckboxWidget.tid
@@ -1,8 +1,9 @@
-title: CheckboxWidget
-created: 201310241419
-modified: 20150220161154000
-tags: Widgets
 caption: checkbox
+created: 20131024141900000
+modified: 20150626091305445
+tags: Widgets
+title: CheckboxWidget
+type: text/vnd.tiddlywiki
 
 ! Introduction
 
@@ -18,6 +19,7 @@ The content of the `<$checkbox>` widget is displayed within an HTML `<label>` el
 |!Attribute |!Description |
 |tiddler |Title of the tiddler to manipulate (defaults to the [[current tiddler|Current Tiddler]]) |
 |tag |The name of the tag to which the checkbox should be bound |
+|invertTag |When set to ''yes'', flips the tag binding logic so that the absence of the tag causes the checkbox to be checked  |
 |field |The name of the field to which the checkbox should be bound |
 |checked |The value of the field corresponding to the checkbox being checked |
 |unchecked |The value of the field corresponding to the checkbox being unchecked |