diff --git a/subscript.py b/subscript.py
index c103482..2c2dbd1 100644
--- a/subscript.py
+++ b/subscript.py
@@ -17,6 +17,11 @@
 
 import markdown
 
+try:
+    from markdown.util import etree, AtomicString
+except:
+    from markdown import etree, AtomicString
+
 # Global Vars
 SUBSCRIPT_RE = r'(\~)([^\~]*)\2'  # the number is subscript~2~
 
@@ -27,8 +32,8 @@ def handleMatch(self, m):
         
         text = subsc
         
-        el = markdown.etree.Element("sub")
-        el.text = markdown.AtomicString(text)
+        el = etree.Element('sub')
+        el.text = AtomicString(text)
         return el
 
 class SubscriptExtension(markdown.Extension):