diff --git a/tests/test_util.py b/tests/test_util.py
index db98ead..4057cde 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -29,6 +29,8 @@ def test_get_next_draw_date_minimum() -> None:
     assert ud.get_next_draw_date(game="mega-millions")
     assert ud.get_next_draw_date(game="powerball")
     assert not ud.get_next_draw_date(game="something")
+    with pytest.raises(TypeError) as exc:
+        ud.get_next_draw_date()
 
 
 def test_get_next_draw_date_specified_from_date() -> None: