diff --git a/skimage/util/tests/test_montage.py b/skimage/util/tests/test_montage.py
index 47e5426d..bc5f2176 100644
--- a/skimage/util/tests/test_montage.py
+++ b/skimage/util/tests/test_montage.py
@@ -79,3 +79,6 @@ def test_rescale_intensity():
 def test_error_ndim():
     arr_error = np.random.randn(1, 2, 3, 4)
     montage2d(arr_error)
+
+if __name__ == '__main__':
+    np.testing.run_module_suite()
diff --git a/skimage/util/tests/test_shape.py b/skimage/util/tests/test_shape.py
index 3b5f8d41..33e3b638 100644
--- a/skimage/util/tests/test_shape.py
+++ b/skimage/util/tests/test_shape.py
@@ -139,3 +139,6 @@ def test_view_as_windows_2D():
                                 [9, 10, 11],
                                 [13, 14, 15],
                                 [17, 18, 19]]]]))
+
+if __name__ == '__main__':
+    np.testing.run_module_suite()