diff --git a/xCAT-server/share/xcat/scripts/setup-server-cert.sh b/xCAT-server/share/xcat/scripts/setup-server-cert.sh
index 684c15187..75b45e3dd 100755
--- a/xCAT-server/share/xcat/scripts/setup-server-cert.sh
+++ b/xCAT-server/share/xcat/scripts/setup-server-cert.sh
@@ -25,7 +25,7 @@ mkdir -p $XCATDIR/cert
 cd $XCATDIR/cert
 sed -i "s/#XCATCASAN#/DNS.1 = `hostname --long`\nDNS.2 = `hostname --short`/g" $XCATCADIR/openssl.cnf
 openssl genrsa -out server-key.pem 2048
-openssl req -config $XCATCADIR/openssl.cnf -new -key server-key.pem -out server-req.pem -extensions server -subj "/CN=$CNA"
+openssl req -config $XCATCADIR/openssl.cnf -new -key server-key.pem -out server-req.pem -subj "/CN=$CNA"
 cp server-req.pem  $XCATDIR/ca/`hostname`.csr
 cd -
 cd $XCATDIR/ca