diff --git a/PIL/ImageFilter.py b/PIL/ImageFilter.py
index 71f42c3ac..c13f75bbc 100644
--- a/PIL/ImageFilter.py
+++ b/PIL/ImageFilter.py
@@ -17,7 +17,7 @@
 
 from functools import reduce
 
-class Filter:
+class Filter(object):
     pass
 
 ##