diff --git a/agent/sbd.in b/agent/sbd.in
index 61b7199..174cb87 100644
--- a/agent/sbd.in
+++ b/agent/sbd.in
@@ -1,182 +1,182 @@
 #!/bin/bash
 #
 # This STONITH script drives the shared-storage stonith plugin.
 #
 # Copyright (C) 2013 Lars Marowsky-Bree <lmb@suse.com>
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public
 # License as published by the Free Software Foundation; either
 # version 2 of the License, or (at your option) any later version.
 #
 # This software is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License along
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 #
 
 # Main code
 
 if [ -z "$sbd_device" ]; then
 	if [ -f @CONFIGDIR@/sbd ]; then
 		source @CONFIGDIR@/sbd
 		sbd_device=$SBD_DEVICE
 	fi
 fi
 
 SBD_DEVS=${sbd_device%;}
 
 sbd_device=${SBD_DEVS//;/ -d }
 
 sbd_check_device() {
 	if [ -z "$sbd_device" ]; then
 		ha_log.sh err "No sbd device(s) found in the configuration."
 		exit 1
 	fi
 }
 
 sbd_validate_timeout() {
 	case "$timeout_bypass" in
 	    yes|true|1|YES|TRUE|ja|on|ON) return ;;
 	esac
 	crm_timeout=$[$(crm_attribute -t crm_config -G -n stonith-timeout -d 20s -q | sed -e 's/\(.*\)s/\1/' -e 's/\(.*\)m/\1*60/')]
 	sbd_timeout=$(sbd -d $sbd_device dump | perl -ne 'if (/msgwait.*: (\d+)/) { print "$1\n"; }' | head -n 1)
-	if [ "$sbd_timeout" -eq "0" ]; then
+	if [ -z "$sbd_timeout" -o "$sbd_timeout" = "0" ]; then
 		return
 	fi
 
 	sbd_timeout_min=$[$sbd_timeout*12/10]
 	if [ "$sbd_timeout_min" -lt 20 ]; then
 		sbd_timeout_min=20
 	fi
 	sbd_timeout_suggested=$[$sbd_timeout_min*12/10]
 
 	if [ "$crm_timeout" -lt "$sbd_timeout_min" ]; then
 		ha_log.sh err "The CIB property stonith-timeout is set too low for sbd to ever succeed"
 		ha_log.sh err "Recommended value is $sbd_timeout_suggested, updating configuration."
 		crm_attribute -t crm_config -n stonith-timeout -v $sbd_timeout_suggested
 		exit 1
 	fi
 }
 	
 case $1 in
 gethosts)
     sbd_check_device
     echo `sbd -d $sbd_device list | cut -f2 | sort | uniq`
     exit 0
     ;;
 off|reset)
     sbd_check_device
     sbd_validate_timeout
     message=$1
     case "$crashdump" in
 	    yes|true|1|YES|TRUE|ja|on|ON) message="crashdump" ;;
     esac
     sbd -d $sbd_device message $2 $message
     exit $?
     ;;
 status)
     sbd_check_device
     sbd_validate_timeout
     error_output=$(sbd -d $sbd_device list 2>&1 >/dev/null)
     if [ $? -ne 0 ]; then
     	error_message=$(echo "$error_output" | grep -v "please check the logs")
     	ha_log.sh err "sbd list failed: $error_message"
     	exit 1
     fi
     exit 0
     ;;
 on)
     exit 1
     ;;
 getconfignames)
     echo "sbd_device crashdump timeout_bypass"
     exit 0
     ;;
 getinfo-devid)
     echo "Shared storage STONITH device"
     exit 0
     ;;
 getinfo-devname)
     echo "Shared storage STONITH device"
     exit 0
     ;;
 getinfo-devdescr)
     cat << DESC
 sbd uses a shared storage device as a medium to communicate
 fencing requests. This allows clusters without network power
 switches; the downside is that access to the shared storage
 device becomes a Single Point of Failure. 
 
 It requires sbd to be configured on all nodes.
 
 Please read http://linux-ha.org/wiki/SBD_Fencing!
 
 DESC
     exit 0
     ;;
 getinfo-devurl)
     echo "http://linux-ha.org/wiki/SBD_Fencing"
     exit 0
     ;;
 getinfo-xml)
     cat << SSHXML
 <parameters>
 
 <parameter name="crashdump">
 <content type="string" />
 <shortdesc lang="en">
 Crashdump instead of regular fence
 </shortdesc>
 <longdesc lang="en">
 If SBD is given a fence command, this option will instead perform a
 kernel crash of a reboot or power-off, which on a properly configured
 system can lead to a crashdump for analysis.
 
 This is less safe for production environments. Please use with caution
 and for debugging purposes only.
 </longdesc>
 </parameter>
 
 <parameter name="sbd_device" unique="1">
 <content type="string" />
 <shortdesc lang="en">
 SBD device(s)
 </shortdesc>
 <longdesc lang="en">
 The block device used for the SBD partition. Up to three
 can be specified if separated by a semicolon. (Please check
 the documentation if specifying two.)
 
 If not specified, will default to the value from @CONFIGDIR@/sbd.
 
 </longdesc>
 </parameter>
 
 <parameter name="timeout_bypass">
 <content type="boolean" />
 <shortdesc lang="en">
 Permit a seemingly too short stonith-timeout
 </shortdesc>
 <longdesc lang="en">
 The sbd agent will try to detect a too short stonith-timeout (relative
 to msgwait) in the Pacemaker configuration and automatically correct
 it.
 
 Should that logic fail in your environment or you have legitimate need
 to use a shorter timeout, you can disable it via this parameter.
 </longdesc>
 </parameter>
 
 </parameters>
 SSHXML
     exit 0
     ;;
 *)
     exit 1
     ;;
 esac