diff --git a/test/math.t b/test/math.t
index b638f1e09..fc7736807 100755
--- a/test/math.t
+++ b/test/math.t
@@ -52,7 +52,7 @@ class TestMath(TestCase):
         cls.t("add three 'due:eoy-10days'")
         cls.t("add four  due:'eoy - 10days'")
         cls.t("add five  'due:eoy - 10days'")
-        cls.t("add six   'due:{}-01-01T00:00:00 - 10days'".format (datetime.now().year + 1))
+        cls.t("add six   'due:{}-12-31T23:59:59 - 10days'".format (datetime.now().year))
 
     def test_compact_unquoted(self):
         """compact unquoted"""