diff --git a/skimage/data/tests/test_data.py b/skimage/data/tests/test_data.py
index a4afb056..ce9b5879 100644
--- a/skimage/data/tests/test_data.py
+++ b/skimage/data/tests/test_data.py
@@ -1,6 +1,6 @@
 import numpy as np
 import skimage.data as data
-from numpy.testing import assert_equal
+from numpy.testing import assert_equal, assert_almost_equal
 
 
 def test_lena():
@@ -58,11 +58,11 @@ def test_coffee():
 
 def test_binary_blobs():
     blobs = data.binary_blobs(length=128)
-    assert blobs.mean() == 0.5
+    assert_almost_equal(blobs.mean(), 0.5, decimal=4)
     blobs = data.binary_blobs(length=128, volume_fraction=0.25)
-    assert blobs.mean() == 0.25
+    assert_almost_equal(blobs.mean(), 0.25, decimal=4)
     blobs = data.binary_blobs(length=32, volume_fraction=0.25, n_dim=3)
-    assert blobs.mean() == 0.25
+    assert_almost_equal(blobs.mean(), 0.25, decimal=4)
     other_realization = data.binary_blobs(length=32, volume_fraction=0.25,
                                           n_dim=3)
     assert not np.all(blobs == other_realization)