diff --git a/lib/marked.js b/lib/marked.js
index 27acce7e05..2b5130dc46 100644
--- a/lib/marked.js
+++ b/lib/marked.js
@@ -27,8 +27,8 @@ var block = {
     + '|<![A-Z][\\s\\S]*?>\\n*' // (4)
     + '|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>\\n*' // (5)
     + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:\\n{2,}|$)' // (6)
-    + '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=\\n|$)[\\s\\S]*?(?:\\n{2,}|$)' // (7) open tag
-    + '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=\\n|$)[\\s\\S]*?(?:\\n{2,}|$)' // (7) closing tag
+    + '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*\\n|$)[\\s\\S]*?(?:\\n{2,}|$)' // (7) open tag
+    + '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=[ \\t]*\\n|$)[\\s\\S]*?(?:\\n{2,}|$)' // (7) closing tag
     + ')',
   def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
   table: noop,