diff --git a/pgweb/docs/views.py b/pgweb/docs/views.py
index 904057ce..b3a12e23 100644
--- a/pgweb/docs/views.py
+++ b/pgweb/docs/views.py
@@ -88,7 +88,7 @@ def root(request):
 		'versions': versions,
 	})
 
-class _VersionPdfWrapper(Version):
+class _VersionPdfWrapper(object):
 	"""
 	A wrapper around a version that knows to look for PDF files, and
 	return their sizes.