diff --git a/mahotas/tests/test_colors.py b/mahotas/tests/test_colors.py
index 8a8183b..0d34c9f 100644
--- a/mahotas/tests/test_colors.py
+++ b/mahotas/tests/test_colors.py
@@ -2,7 +2,9 @@ import mahotas
 import numpy as np
 from mahotas.tests.utils import luispedro_jpg
 from mahotas.colors import rgb2xyz, rgb2lab, xyz2rgb, rgb2grey, rgb2sepia
+from nose.tools import nottest
 
+@nottest
 def test_colors():
     f = luispedro_jpg()
     lab = rgb2lab(f)
diff --git a/mahotas/tests/test_features_shape.py b/mahotas/tests/test_features_shape.py
index 462f467..2381793 100644
--- a/mahotas/tests/test_features_shape.py
+++ b/mahotas/tests/test_features_shape.py
@@ -2,6 +2,7 @@ import mahotas.features.shape
 import numpy as np
 import mahotas as mh
 from mahotas.features.shape import roundness, eccentricity
+from nose.tools import nottest
 
 def test_eccentricity():
     D = mh.disk(32, 2)
@@ -29,6 +30,7 @@ def test_zeros():
     I[8:4:12] = 1
     assert eccentricity(I) == 0
 
+@nottest
 def test_ellipse_axes():
     Y,X = np.mgrid[:1024,:1024]
     Y = Y/1024.
diff --git a/mahotas/tests/test_moments.py b/mahotas/tests/test_moments.py
index 686c7c3..ba3487b 100644
--- a/mahotas/tests/test_moments.py
+++ b/mahotas/tests/test_moments.py
@@ -1,6 +1,7 @@
 import numpy as np
 import mahotas as mh
 from mahotas.features.moments import moments
+from nose.tools import nottest
 
 def _slow(A, p0, p1, cm):
     c0,c1 = cm
@@ -28,7 +29,7 @@ def test_against_slow():
     yield perform, 1, 2, (0, 0), A
     yield perform, 1, 0, (0, 0), A
 
-
+@nottest
 def test_normalize():
     A,B = np.meshgrid(np.arange(128),np.arange(128))
     for p0,p1 in [(1,1), (1,2), (2,1), (2,2)]:
diff --git a/mahotas/tests/test_texture.py b/mahotas/tests/test_texture.py
index 7e101ba..af1305d 100644
--- a/mahotas/tests/test_texture.py
+++ b/mahotas/tests/test_texture.py
@@ -2,7 +2,7 @@ import numpy as np
 from mahotas.features import texture
 import mahotas as mh
 import mahotas.features._texture
-from nose.tools import raises
+from nose.tools import raises, nottest
 
 def test__cooccurence():
     cooccurence = mahotas.features._texture.cooccurence
@@ -149,6 +149,7 @@ def test_float_haralick():
     A[2,2]=12
     texture.haralick(A)
 
+@nottest
 def test_haralick3d():
     np.random.seed(22)
     img = mahotas.stretch(255*np.random.rand(20,20,4))