diff --git a/tests/test_types_extras.py b/tests/test_types_extras.py
index 992a73d3..503e2005 100755
--- a/tests/test_types_extras.py
+++ b/tests/test_types_extras.py
@@ -1563,7 +1563,7 @@ class RangeCasterTestCase(ConnectingTestCase):
         from psycopg2.tz import FixedOffsetTimezone
         cur = self.conn.cursor()
 
-        d1 = date(2012, 01, 01)
+        d1 = date(2012, 1, 1)
         d2 = date(2012, 12, 31)
         r = DateRange(d1, d2)
         cur.execute("select %s", (r,))