--- Sphinx-1.1.3/sphinx/ext/inheritance_diagram.py.orig	2012-02-19 11:54:47.000000000 +0100
+++ Sphinx-1.1.3/sphinx/ext/inheritance_diagram.py	2013-03-02 18:44:29.303047600 +0100
@@ -199,8 +199,8 @@ class InheritanceGraph(object):
         'shape': 'box',
         'fontsize': 10,
         'height': 0.25,
-        'fontname': 'Vera Sans, DejaVu Sans, Liberation Sans, '
-                    'Arial, Helvetica, sans',
+        'fontname': '"Vera Sans, DejaVu Sans, Liberation Sans, '
+                    'Arial, Helvetica, sans"',
         'style': '"setlinewidth(0.5)"',
     }
     default_edge_attrs = {