Index: libexec/rc/rc.subr
===================================================================
--- libexec/rc/rc.subr
+++ libexec/rc/rc.subr
@@ -948,14 +948,14 @@
 	_keywords="start stop restart rcvar enable disable delete enabled describe extracommands $extra_commands"
 	rc_pid=
 	_pidcmd=
-	_procname=${procname:-${command}}
+	: "${procname:=${command}}"
 
 					# setup pid check command
-	if [ -n "$_procname" ]; then
+	if [ -n "$procname" ]; then
 		if [ -n "$pidfile" ]; then
-			_pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')'
+			_pidcmd='rc_pid=$(check_pidfile '"$pidfile $procname $command_interpreter"')'
 		else
-			_pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')'
+			_pidcmd='rc_pid=$(check_process '"$procname $command_interpreter"')'
 		fi
 		_keywords="${_keywords} status poll"
 	fi