diff --git a/tests/test_core.py b/tests/test_core.py
index 1c16844..355e8b0 100755
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -18,7 +18,7 @@
 
 obs = ['walker/' + s for s in obs]
 
-def test_core():
+def test_can_create_and_run_environment():
 
     env = walk_on_ball()
     
@@ -36,4 +36,4 @@ def test_core():
         timestep = env.step(action)
         assert timestep.reward is not None
 
-    _ = env.physics.render()
+    # _ = env.physics.render()
diff --git a/tests/test_flymodel.py b/tests/test_flymodel.py
index e27bce6..baa8b2e 100755
--- a/tests/test_flymodel.py
+++ b/tests/test_flymodel.py
@@ -37,5 +37,5 @@ def test_can_compile_and_step_simulation():
         physics.data.ctrl[:] = np.random.uniform(-.2, .2, physics.model.nu)
         physics.step()
 
-    _ = physics.render()
+    # _ = physics.render()