diff --git a/pages/common/ksh.md b/pages/common/ksh.md
index 070e40f8a..22c7de247 100644
--- a/pages/common/ksh.md
+++ b/pages/common/ksh.md
@@ -2,6 +2,7 @@
 
 > Korn Shell.
 > `bash` and `sh`-compatible command line interpreter.
+> More information: <http://kornshell.com>.
 
 - Start interactive command line interpreter: