diff --git a/core/modules/widgets/action-setfield.js b/core/modules/widgets/action-setfield.js
index 7d6681752..5f40d4e3c 100644
--- a/core/modules/widgets/action-setfield.js
+++ b/core/modules/widgets/action-setfield.js
@@ -60,7 +60,7 @@ Invoke the action associated with this widget
 SetFieldWidget.prototype.invokeAction = function(triggeringWidget,event) {
 	var self = this,
 		options = {};
-	options.timestamp = this.actionTimestamp;
+	options.suppressTimestamp = !this.actionTimestamp;
 	if(typeof this.actionValue === "string") {
 		this.wiki.setText(this.actionTiddler,this.actionField,this.actionIndex,this.actionValue,options);		
 	}
diff --git a/core/modules/wiki.js b/core/modules/wiki.js
index bf53e34c6..9e6a30383 100755
--- a/core/modules/wiki.js
+++ b/core/modules/wiki.js
@@ -60,8 +60,8 @@ exports.setTextReference = function(textRef,value,currTiddlerTitle) {
 
 exports.setText = function(title,field,index,value,options) {
 	options = options || {};
-	var creationFields = options.timestamp ? this.getCreationFields() : {},
-		modificationFields = options.timestamp ? this.getModificationFields() : {};
+	var creationFields = options.suppressTimestamp ? {} : this.getCreationFields(),
+		modificationFields = options.suppressTimestamp ? {} : this.getModificationFields();
 	// Check if it is a reference to a tiddler field
 	if(index) {
 		var data = this.getTiddlerData(title,Object.create(null));