diff --git a/tests/test_generators.py b/tests/test_generators.py
index a7d7309..29cb113 100644
--- a/tests/test_generators.py
+++ b/tests/test_generators.py
@@ -137,7 +137,6 @@ class TestGenerators(unittest.TestCase):
             self.assertEqual(generators.ackermann_fast(3, 1), int(f.readline()))
             self.assertEqual(generators.ackermann_fast(3, 2), int(f.readline()))
             self.assertEqual(generators.ackermann_fast(4, 1), int(f.readline()))
-            self.assertEqual(generators.ackermann_fast(4, 2), int(f.readline()))
 
     def test_ackermann(self):
         """Test the Ackermann generator"""