Index: head/graphics/dataplot/pkg-descr
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--- head/graphics/dataplot/pkg-descr	(revision 507940)
+++ head/graphics/dataplot/pkg-descr	(revision 507941)
@@ -1,14 +1,14 @@
 Dataplot is a free, public-domain, multi-platform (Unix, Linux, PC-DOS,
 Windows NT, etc.) software system for scientific visualization,
 statistical analysis, and non-linear modeling.  The target Dataplot user
 is the researcher and analyst engaged in the characterization, modeling,
 visualization, analysis, monitoring, and optimization of scientific and
 engineering processes.
 
 The original version was released by James J. Filliben in 1978 with
 continual enhancements to present.
 
 NOTE: This port only includes the command line tool, the website has an
 experimental GUI tool that uses expect and extensive reference manuals.
 
-WWW: http://www.itl.nist.gov/div898/software/dataplot.html/
+WWW: https://www.itl.nist.gov/div898/software/dataplot/index.htm