diff --git a/source4/heimdal/lib/wind/gen-normalize.py b/source4/heimdal/lib/wind/gen-normalize.py
index e51893db3b8..0955a54b95a 100644
--- a/source4/heimdal/lib/wind/gen-normalize.py
+++ b/source4/heimdal/lib/wind/gen-normalize.py
@@ -136,7 +136,7 @@ exclusions = UnicodeData.read(sys.argv[2])
 inv = dict([(''.join(["%05x" % int(x, 0x10) for x in v[4].split(' ')]),
              [k, v[0]])
             for k,v in ud.items()
-            if v[4] and not re.search('<[a-zA-Z]+> *', v[4]) and not exclusions.has_key(k)])
+            if v[4] and not re.search('<[a-zA-Z]+> *', v[4]) and not k in exclusions])
 
 table = 0