diff --git a/lib/htmlparser.js b/lib/htmlparser.js
index 30c5ced..3d9436e 100644
--- a/lib/htmlparser.js
+++ b/lib/htmlparser.js
@@ -227,7 +227,7 @@ function Parser (handler, options) {
 				, type: this._parseState
 			};
 	
-			var elementName = this.parseTagName(element.data);
+			var elementName = this.parseTagName(element.data).toLowerCase();
 	
 			//This section inspects the current tag stack and modifies the current
 			//element if we're actually parsing a special area (script/comment/style tag)