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
@@ -252,7 +252,9 @@
 .It "path	path	/bin /usr/bin	Default search path."
 .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.
+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.