diff --git a/man7/random.7 b/man7/random.7
index 35fd9f208..8421c4969 100644
--- a/man7/random.7
+++ b/man7/random.7
@@ -25,6 +25,9 @@
 .\" the source, must acknowledge the copyright and authors of this work.
 .\" %%%LICENSE_END
 .\"
+.\" The following web page is quite informative:
+.\" http://www.2uo.de/myths-about-urandom/
+.\"
 .TH RANDOM 7 2016-11-11 "Linux" "Linux Programmer's Manual"
 .SH NAME
 random \- overview of interfaces for obtaining randomness