diff --git a/lib/html.js b/lib/html.js
index 455c1ae8e1d23cb57bf71c0421d5a7430e86c3f4..8de8b08a283eea8e115c3e1545a6e8e9d77bbe06 100644
--- a/lib/html.js
+++ b/lib/html.js
@@ -227,8 +227,8 @@ function style_html(html_source, options) {
 
       var tag_complete = content.join('');
       var tag_index;
-      if (tag_complete.indexOf(' ') != -1) { //if there's whitespace, thats where the tag name ends
-        tag_index = tag_complete.indexOf(' ');
+      if (tag_complete.search(/\s/) != -1) { //if there's whitespace, thats where the tag name ends
+        tag_index = tag_complete.search(/\s/);
       }
       else { //otherwise go with the tag ending
         tag_index = tag_complete.indexOf('>');