--- tests/testxmlgen.py
+++ tests/testxmlgen.py
@@ -20,6 +20,7 @@
 
 import xml.sax, xml.sax.saxutils
 import StringIO
+import sys
 import unittest
 
 class MyGen(xml.sax.saxutils.XMLGenerator):
@@ -70,14 +71,16 @@
 <a:greetings xmlns:a="http://example.com/ns">
   <a:greet xml:lang="en">Hello world</a:greet>
 </a:greetings>"""
-        parser.feed(testcontent)
-        parser.close()
-        expectedresult="""<?xml version="1.0" encoding="utf-8"?>
+        if sys.version_info < (2, 7):
+            self.assertRaises(KeyError, parser.feed, testcontent)
+        else:
+            parser.feed(testcontent)
+            parser.close()
+            expectedresult="""<?xml version="1.0" encoding="utf-8"?>
 <a:greetings xmlns:a="http://example.com/ns">
   <a:greet xml:lang="en">Hello world</a:greet>
 </a:greetings>"""
-        self.assertEqual( outfp.getvalue(), expectedresult)
-#       self.assertRaises(KeyError, parser.feed, testcontent)
+            self.assertEqual( outfp.getvalue(), expectedresult)
 
     def test_myxml(self):
         """ Test that my patch works """