--- /etc/rc.subr.orig	2021-05-25 13:21:30.761680000 +0000
+++ /etc/rc.subr	2021-05-25 13:21:34.930815000 +0000
@@ -1257,13 +1257,17 @@
 			# We cannot use protect(1) inside jails.
 			if [ -n "$_oomprotect" ] && [ -f "${PROTECT}" ] &&
 			    [ "$(sysctl -n security.jail.jailed)" -eq 0 ]; then
-				pid=$(check_process $command)
+				pids=$(check_process $command)
 				case $_oomprotect in
 				[Aa][Ll][Ll])
-					${PROTECT} -i -p ${pid}
+					for pid in $pids; do
+						${PROTECT} -i -p ${pid}
+					done
 					;;
 				[Yy][Ee][Ss])
-					${PROTECT} -p ${pid}
+					for pid in $pids; do
+						${PROTECT} -p ${pid}
+					done
 					;;
 				esac
 			fi