diff --git a/lib/common.js b/lib/common.js
index 4139e80b..dd8f6984 100644
--- a/lib/common.js
+++ b/lib/common.js
@@ -24,7 +24,7 @@ var ATTRIBUTEVALUESPEC = "(?:" + "\\s*=" + "\\s*" + ATTRIBUTEVALUE + ")";
 var ATTRIBUTE = "(?:" + "\\s+" + ATTRIBUTENAME + ATTRIBUTEVALUESPEC + "?)";
 var OPENTAG = "<" + TAGNAME + ATTRIBUTE + "*" + "\\s*/?>";
 var CLOSETAG = "</" + TAGNAME + "\\s*[>]";
-var HTMLCOMMENT = "<!-->|<!--->|<!--(?:[^-]+|-[^-]|--[^>])*-->"
+var HTMLCOMMENT = "<!-->|<!--->|<!--(?:[^-]|-[^-]|--[^>])*-->"
 var PROCESSINGINSTRUCTION = "[<][?][\\s\\S]*?[?][>]";
 var DECLARATION = "<![A-Z]+" + "[^>]*>";
 var CDATA = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>";