diff --git a/source/tests/pt/test_multitask.py b/source/tests/pt/test_multitask.py
index c7a2784367..0c1abf1f44 100644
--- a/source/tests/pt/test_multitask.py
+++ b/source/tests/pt/test_multitask.py
@@ -33,20 +33,16 @@ def test_multitask_train(self):
         trainer.run()
         # check model keys
         self.assertEqual(len(trainer.wrapper.model), 2)
-        self.assertTrue("model_1" in trainer.wrapper.model)
-        self.assertTrue("model_2" in trainer.wrapper.model)
+        self.assertIn("model_1", trainer.wrapper.model)
+        self.assertIn("model_2", trainer.wrapper.model)
 
         # check shared parameters
         multi_state_dict = trainer.wrapper.model.state_dict()
         for state_key in multi_state_dict:
             if "model_1" in state_key:
-                self.assertTrue(
-                    state_key.replace("model_1", "model_2") in multi_state_dict
-                )
+                self.assertIn(state_key.replace("model_1", "model_2"), multi_state_dict)
             if "model_2" in state_key:
-                self.assertTrue(
-                    state_key.replace("model_2", "model_1") in multi_state_dict
-                )
+                self.assertIn(state_key.replace("model_2", "model_1"), multi_state_dict)
             if "model_1.descriptor" in state_key:
                 torch.testing.assert_allclose(
                     multi_state_dict[state_key],