diff --git a/xCAT-test/autotest/testcase/infiniband/rhel-infiniband-diskless-install.sh b/xCAT-test/autotest/testcase/infiniband/rhel-infiniband-diskless-install.sh
index 393f41f75..b0c646118 100755
--- a/xCAT-test/autotest/testcase/infiniband/rhel-infiniband-diskless-install.sh
+++ b/xCAT-test/autotest/testcase/infiniband/rhel-infiniband-diskless-install.sh
@@ -141,7 +141,7 @@ mkdir -p /install/custom/netboot/rh
 cp /opt/xcat/share/xcat/ib/scripts/Mellanox/mlnxofed_ib_install.v2 \
 	/install/postscripts/mlnxofed_ib_install.v2
 (
-	cat "/opt/xcat/share/xcat/netboot/rh/compute.${LINUX_DISTRO%%.*}.${LINUX_ARCH}.postinstall" 
+	cat "/opt/xcat/share/xcat/netboot/rh/compute.${LINUX_DISTRO%%.*}.${LINUX_ARCH}.postinstall"
 	cat <<-EOF
 
 	NODESETSTATE=genimage IMGROOTPATH=${OSIMAGE_ROOTIMGDIR}/rootimg bash -x /install/postscripts/mlnxofed_ib_install.v2 -p /install/mlnx/${MLNX_ISO##*/} -m --add-kernel-support