diff --git a/lib/client/edit/worker-html.js b/lib/client/edit/worker-html.js
index 4ffca0fb..af9766ab 100644
--- a/lib/client/edit/worker-html.js
+++ b/lib/client/edit/worker-html.js
@@ -7644,8 +7644,9 @@ function getAttribute(node, name) {
 SAXTreeBuilder.prototype.addAttributesToElement = function(element, attributes) {
 	for (var i = 0; i < attributes.length; i++) {
 		var attribute = attributes[i];
-		if (!getAttribute(element, attribute.nodeName))
-			element.attributes.push(attribute);
+		if (element.attributes)
+    		if (!getAttribute(element, attribute.nodeName))
+    			element.attributes.push(attribute);
 	}
 };