diff --git a/splinepy/microstructure/tiles/cube_void.py b/splinepy/microstructure/tiles/cube_void.py
index c435b6a88..9eeb3a33b 100644
--- a/splinepy/microstructure/tiles/cube_void.py
+++ b/splinepy/microstructure/tiles/cube_void.py
@@ -64,7 +64,7 @@ def _rotation_matrix_y(self, angle):
 
     def _rotation_matrix_y_deriv(self, angle):
         cc, ss = _np.cos(angle), _np.sin(angle)
-        return _np.array([[-ss, 0, -cc], [0, 1, 0], [cc, 0, -ss]])
+        return _np.array([[-ss, 0, -cc], [0, 0, 0], [cc, 0, -ss]])
 
     def create_tile(
         self,
diff --git a/tests/test_microstructure.py b/tests/test_microstructure.py
index 339efd219..009cbabf4 100644
--- a/tests/test_microstructure.py
+++ b/tests/test_microstructure.py
@@ -176,7 +176,7 @@ def test_tile_closure():
                 check_control_points(tile_patches)
 
 
-def test_tile_derivatives(np_rng, heps=1e-8, n_test_points=4):
+def test_tile_derivatives(np_rng, heps=1e-7, n_test_points=10):
     """Testing the correctness of the tile derivatives using Finite Differences.
     This includes every closure and no closure, every parameter and every patch
     by evaluating at random points and for random parameters.
@@ -188,8 +188,8 @@ def test_tile_derivatives(np_rng, heps=1e-8, n_test_points=4):
     n_test_points: int
         Number of testing points in the parametric domain
     """
-    # TODO: right now EllipsVoid, CubeVoid and InverseCross show wrong derivatives
-    skip_classes = [ms.tiles.EllipsVoid, ms.tiles.CubeVoid]
+    # TODO: right now EllipsVoid shows wrong derivatives
+    skip_classes = [ms.tiles.EllipsVoid]
 
     for tile_class in all_tile_classes:
         # TODO: right now skip classes with faultily implemented derivatives