diff --git a/lib/libutil/login.conf.5 b/lib/libutil/login.conf.5
--- a/lib/libutil/login.conf.5
+++ b/lib/libutil/login.conf.5
@@ -253,6 +253,9 @@
 .It "priority	number	0	Initial priority level."
 A value in the nice range extended below with the 32 real-time class priorities
 and above with the 32 idle class priorities.
+Special value
+.Ql inherit
+prevents resetting the priority.
 .It "requirehome 	bool	false	Require a valid home directory to login."
 .It "setenv	list		A comma-separated list of environment variables and"
 values to which they are to be set.