diff --git a/skimage/restoration/tests/test_inpaint.py b/skimage/restoration/tests/test_inpaint.py
index 39d7f0a7..1fe3e766 100644
--- a/skimage/restoration/tests/test_inpaint.py
+++ b/skimage/restoration/tests/test_inpaint.py
@@ -14,9 +14,9 @@ def test_inpaint_biharmonic():
     mask[0, 4:] = 1
     out = inpaint.inpaint_biharmonic(img, mask)
     ref = np.array(
-        [[0., 0.0625, 0.25, 0.5625, 0.671875],
-         [0., 0.0625, 0.25, 0.5390625, 0.78125],
-         [0., 0.0625, 0.2578125, 0.5625, 0.890625],
+        [[0., 0.0625, 0.25, 0.5625, 0.56947314],
+         [0., 0.0625, 0.25, 0.47029959, 0.57644628],
+         [0., 0.0625, 0.24664256, 0.49225207, 0.68956612],
          [0., 0.0625, 0.25, 0.5625, 1.],
          [0., 0.0625, 0.25, 0.5625, 1.]]
     )