diff --git a/man5/proc.5 b/man5/proc.5
index 6946cce36..8ef3cf9b9 100644
--- a/man5/proc.5
+++ b/man5/proc.5
@@ -131,7 +131,9 @@ Thus, to print out the environment of process 1, you would do:
 .ft P
 
 (For a reason why one should want to do this, see
-.BR lilo (8).)
+.BR lilo (8)
+or
+.BR grub (8).)
 .TP
 .I /proc/[number]/exe
 Under Linux 2.2 and later, this file is a symbolic link