diff --git a/CONTRIBUTING.txt b/CONTRIBUTING.txt
index 3f0eed9c..79b691e4 100644
--- a/CONTRIBUTING.txt
+++ b/CONTRIBUTING.txt
@@ -153,7 +153,7 @@ Stylistic Guidelines
   and then refer to ``M`` and ``N`` in the docstring, if necessary.
 
 * Refer to array dimensions as (plane), row, column, not as x, y, z. See
-  `Coordinate conventions <http://scikit-image.org/docs/dev/user_guide/numpy_images.html#coordinate-conventions>`__
+  :ref:`Coordinate conventions <numpy-images-coordinate-conventions>`
   in the user guide for more information.
 
 * Functions should support all input image dtypes.  Use utility functions such
diff --git a/doc/source/user_guide/numpy_images.txt b/doc/source/user_guide/numpy_images.txt
index e976ae7e..5bba5da0 100644
--- a/doc/source/user_guide/numpy_images.txt
+++ b/doc/source/user_guide/numpy_images.txt
@@ -130,6 +130,7 @@ the grayscale image above:
     >>> plt.imshow(cat)
 
 
+.. _numpy-images-coordinate-conventions:
 Coordinate conventions
 ----------------------