diff --git a/tests/test_run.py b/tests/test_run.py
index 32a4b30..b29a526 100644
--- a/tests/test_run.py
+++ b/tests/test_run.py
@@ -37,8 +37,9 @@ def test_onpolicy(model_class, env_id):
     # model.load("test_save")
     # os.remove("test_save.pth")
 
-def test_sac():
+@pytest.mark.parametrize("ent_coef", ['auto', 0.01])
+def test_sac(ent_coef):
     model = SAC('MlpPolicy', 'Pendulum-v0', policy_kwargs=dict(net_arch=[64, 64]),
-                learning_starts=100, verbose=1, create_eval_env=True, ent_coef='auto',
+                learning_starts=100, verbose=1, create_eval_env=True, ent_coef=ent_coef,
                 action_noise=NormalActionNoise(np.zeros(1), np.zeros(1)))
     model.learn(total_timesteps=1000, eval_freq=500)