diff --git a/xCAT/postscripts/servicenode b/xCAT/postscripts/servicenode
index 55c6a8204..dd906e7a3 100755
--- a/xCAT/postscripts/servicenode
+++ b/xCAT/postscripts/servicenode
@@ -28,12 +28,11 @@ my $msg = "Removing OpenIPMI-tools";
 $msg = "Removing tftp";
 `logger -t xcat $msg`;
 `rpm -e tftp-server`;
-if [[ $NODESETSTATE = INSTALL]]
-then
+if ($ENV{'NODESETSTATE'} eq "install") {
   $msg = "Installing xCAT";
-  `logger -t xcat $msg`;
+ `logger -t xcat $msg`;
   `rpm -ivh /xcatpost/xcat/RPMS/*/*.rpm`;
-fi
+}
 $msg = "copying certificates and restarting daemon";
 `logger -t xcat $msg`;
 `/opt/xcat/sbin/copycerts`;