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
@@ -262,6 +262,9 @@
 maps to 31; see
 .Xr idprio 1
 .Pc .
+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.