diff --git a/sysctl.d/README b/sysctl.d/README
index ca3e030..1b056a7 100644
--- a/sysctl.d/README
+++ b/sysctl.d/README
@@ -10,4 +10,5 @@ with .conf, or it will not be read.
 
 The recommended location for local system settings is /etc/sysctl.d/local.conf
 but as long as you follow the rules for the name of the file, anything will
-work. see the sysctl.conf(5) man page for details of the format.
+work. see the sysctl.conf(5) man page for details of the format. This manpage
+can be found in the `procps-doc` package.