Index: conf/upsmon.conf.sample.in
--- conf/upsmon.conf.sample.in.orig
+++ conf/upsmon.conf.sample.in
@@ -170,7 +170,7 @@ MINSUPPLIES 1
 # Or use the old DOS 8.3 file name, like this:
 # SHUTDOWNCMD "C:\\PROGRA~1\\SOMECO~1.bat -first_arg -second_arg"
 
-SHUTDOWNCMD "/sbin/shutdown -h +0"
+SHUTDOWNCMD "/sbin/shutdown -hp +0"
 
 # --------------------------------------------------------------------------
 # SHUTDOWNEXIT <boolean|num>
