diff --git a/xCAT-server/share/xcat/netboot/add-on/torque/pbs_mom b/xCAT-server/share/xcat/netboot/add-on/torque/pbs_mom
index 267a53dec..0515bd019 100755
--- a/xCAT-server/share/xcat/netboot/add-on/torque/pbs_mom
+++ b/xCAT-server/share/xcat/netboot/add-on/torque/pbs_mom
@@ -28,7 +28,7 @@ fi
 
 # let see how we were called
 case "$1" in
-	start) 
+	start)
 		if [ -r /etc/security/access.conf.BOOT ]
 		then
 			cp -f /etc/security/access.conf.BOOT /etc/security/access.conf