diff --git a/skimage/draw/tests/test_draw3d.py b/skimage/draw/tests/test_draw3d.py
index 26c63cde..14bf140f 100644
--- a/skimage/draw/tests/test_draw3d.py
+++ b/skimage/draw/tests/test_draw3d.py
@@ -79,8 +79,8 @@ def test_ellipsoid_levelset():
                        [ 1.25,  0.5 ,  0.25,  0.5 ,  1.25],
                        [ 2.  ,  1.25,  1.  ,  1.25,  2.  ]]]]
 
-    assert_array_equal(test, expected.astype(bool))
-    assert_array_equal(test_anisotropic, expected.astype(bool))
+    assert_array_equal(test, expected)
+    assert_array_equal(test_anisotropic, expected)
 
 
 def test_ellipsoid_stats():
diff --git a/skimage/measure/tests/test_marching_cubes.py b/skimage/measure/tests/test_marching_cubes.py
index 991da060..7a1fd40a 100644
--- a/skimage/measure/tests/test_marching_cubes.py
+++ b/skimage/measure/tests/test_marching_cubes.py
@@ -7,7 +7,7 @@ from skimage.measure import marching_cubes, mesh_surface_area
 
 def test_marching_cubes_isotropic():
     ellipsoid_isotropic = ellipsoid(6, 10, 16, levelset=True)
-    _, surf = ellipsoid_stats(6, 10, 16, levelset=True)
+    _, surf = ellipsoid_stats(6, 10, 16)
     verts, faces = marching_cubes(ellipsoid_isotropic, 0.)
     surf_calc = mesh_surface_area(verts, faces)
 
@@ -17,9 +17,9 @@ def test_marching_cubes_isotropic():
 
 def test_marching_cubes_anisotropic():
     sampling = (1., 10 / 6., 16 / 6.)
-    ellipsoid_anisotropic, _, surf = ellipsoid(6, 10, 16, sampling=sampling,
-                                               levelset=True)
-    _, surf = ellipsoid_stats(6, 10, 16, sampling=sampling, levelset=True)
+    ellipsoid_anisotropic = ellipsoid(6, 10, 16, sampling=sampling,
+                                      levelset=True)
+    _, surf = ellipsoid_stats(6, 10, 16, sampling=sampling)
     verts, faces = marching_cubes(ellipsoid_anisotropic, 0.,
                                   sampling=sampling)
     surf_calc = mesh_surface_area(verts, faces)