diff --git a/lib/ice-coder.js b/lib/ice-coder.js
index 37d9004..cdf5418 100644
--- a/lib/ice-coder.js
+++ b/lib/ice-coder.js
@@ -941,7 +941,9 @@ var ICEcoder = {
 		if ("undefined" != typeof state.curState) {
 			ICEcoder.htmlTagArray = [];
 			for (cx = state.curState.context; cx; cx = cx.prev) {
-				ICEcoder.htmlTagArray.unshift(cx.tagName);
+				if ("undefined" != typeof cx.tagName) {
+					ICEcoder.htmlTagArray.unshift(cx.tagName);
+				}
 			}
 		}
 		ICEcoder.tagString = ICEcoder.htmlTagArray[ICEcoder.htmlTagArray.length-1];