diff --git a/tests/test_dates.py b/tests/test_dates.py
index 9b719056..98b1f555 100755
--- a/tests/test_dates.py
+++ b/tests/test_dates.py
@@ -338,6 +338,7 @@ class DatetimeTests(ConnectingTestCase, CommonDatetimeTestsMixin):
         t = self.execute("select '24:00+05:30'::timetz;")
         self.assertEqual(t, time(0, 0, tzinfo=FixedOffsetTimezone(330)))
 
+    @skip_before_postgres(8, 1)
     def test_large_interval(self):
         t = self.execute("select '999999:00:00'::interval")
         self.assertEqual(total_seconds(t), 999999 * 60 * 60)