diff --git a/quantum/wsgi.py b/quantum/wsgi.py
index 946af82dd5a..af46267e9a1 100644
--- a/quantum/wsgi.py
+++ b/quantum/wsgi.py
@@ -24,7 +24,6 @@ from xml.parsers import expat
 
 import eventlet.wsgi
 eventlet.patcher.monkey_patch(all=False, socket=True)
-from lxml import etree
 import routes.middleware
 import webob.dec
 import webob.exc
@@ -310,11 +309,6 @@ class XMLDictSerializer(DictSerializer):
             link_nodes.append(link_node)
         return link_nodes
 
-    def _to_xml(self, root):
-        """Convert the xml object to an xml string."""
-        # we use lxml here instead of xml.minidom for performance reasons
-        return etree.tostring(root, encoding='UTF-8', xml_declaration=True)
-
 
 class ResponseHeaderSerializer(ActionDispatcher):
     """Default response headers serialization"""
diff --git a/tools/pip-requires b/tools/pip-requires
index cbd0640439e..b0945099fa1 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -8,7 +8,6 @@ greenlet>=0.3.1
 httplib2
 iso8601>=0.1.4
 kombu==1.0.4
-lxml
 netaddr
 python-quantumclient>=2.0
 pyudev