diff --git a/xCAT-genesis-builder/dhclient-script b/xCAT-genesis-builder/dhclient-script
index 21c1e0e76..a1987fc1c 100755
--- a/xCAT-genesis-builder/dhclient-script
+++ b/xCAT-genesis-builder/dhclient-script
@@ -45,7 +45,7 @@ elif [ $reason = "BOUND6" ]; then
 	if [ ! -z "$old_ip6_address" ]; then
 		ip addr del dev $interface $old_ip6_address/$old_ip6_prefixlen
 	fi
-	if [ ! -z "$new_ip6_address" ]; then 
+	if [ ! -z "$new_ip6_address" ]; then
 		ip addr add dev $interface $new_ip6_address/$new_ip6_prefixlen
 	fi
 elif [ $reason = "RELEASE" ]; then