diff -up src/sage/geometry/polyhedron/base.py.orig src/sage/geometry/polyhedron/base.py
--- src/sage/geometry/polyhedron/base.py.orig	2015-10-11 17:54:35.252807540 -0300
+++ src/sage/geometry/polyhedron/base.py	2015-10-11 17:54:41.621807784 -0300
@@ -3371,10 +3371,6 @@ class Polyhedron_base(Element):
 
              David Avis's lrs program.
         """
-        if not is_package_installed('lrslib'):
-            raise NotImplementedError('You must install the optional lrslib package '
-                                       'for this function to work')
-
         from sage.misc.temporary_file import tmp_filename
         from subprocess import Popen, PIPE
         in_str = self.cdd_Vrepresentation()