diff --git a/pages/common/gnuplot.md b/pages/common/gnuplot.md
index 8dad15642c..6e9e0959c5 100644
--- a/pages/common/gnuplot.md
+++ b/pages/common/gnuplot.md
@@ -1,6 +1,7 @@
 # gnuplot
 
 > A graph plotter that outputs in several formats.
+> Homepage: <http://www.gnuplot.info/>.
 
 - Start the interactive graph plotting shell: