diff --git a/doc/rst/source/supplements/gshhg/gshhg.rst b/doc/rst/source/supplements/gshhg/gshhg.rst
index 88816858146..ededc5ded52 100644
--- a/doc/rst/source/supplements/gshhg/gshhg.rst
+++ b/doc/rst/source/supplements/gshhg/gshhg.rst
@@ -239,7 +239,6 @@ References
 Bohlander, J. and T. Scambos. 2007, Antarctic coastlines and grounding line
 derived from MODIS Mosaic of Antarctica (MOA). Boulder, Colorado USA:
 National Snow and Ice Data Center. Digital media. Accessed 24 April 2008.
-Via Atlas of the Cryosphere: https://nsidc.org/MMS/atlas/cryosphere_atlas_north.html.
 
 Douglas, D. H., and T. K. Peucker, 1973, Algorithms for the reduction of
 the number of points required to represent a digitized line of its