diff --git a/tangostationcontrol/tangostationcontrol/test/beam/test_delays.py b/tangostationcontrol/tangostationcontrol/test/beam/test_delays.py
index 4275b3e36c917e303cf82e2e42718d28c499054b..cf4c5f6b7c4b48a441090136bd566092b83cdf0d 100644
--- a/tangostationcontrol/tangostationcontrol/test/beam/test_delays.py
+++ b/tangostationcontrol/tangostationcontrol/test/beam/test_delays.py
@@ -61,7 +61,7 @@ class TestAttributeTypes(base.TestCase):
         # calculate the delays based on the set reference position, the set time and now the set direction and antenna positions.
         delays = d.convert(direction, antenna_itrf)
 
-        self.assertTrue(delays == [0.0])
+        self.self.assertListEqual(delays == [0.0])
 
     def test_light_second_delay(self):
         """