diff --git a/core/modules/saver-handler.js b/core/modules/saver-handler.js
index 4c938f7af..40747b8d6 100644
--- a/core/modules/saver-handler.js
+++ b/core/modules/saver-handler.js
@@ -37,10 +37,10 @@ function SaverHandler(options) {
 		// Listen out for changes to tiddlers
 		this.wiki.addEventListener("change",function(changes) {
 			// Filter the changes so that we only count changes to tiddlers that we care about
-			var filteredChanges = self.filterFn.call(self.wiki,function(callback) {
+			var filteredChanges = self.filterFn.call(self.wiki,function(iterator) {
 				$tw.utils.each(changes,function(change,title) {
 					var tiddler = self.wiki.getTiddler(title);
-					callback(tiddler,title);
+					iterator(tiddler,title);
 				});
 			});
 			// Adjust the number of changes