diff --git a/xCAT/postscripts/nicutils.sh b/xCAT/postscripts/nicutils.sh
index eb877310a..b4c6a6b6d 100755
--- a/xCAT/postscripts/nicutils.sh
+++ b/xCAT/postscripts/nicutils.sh
@@ -1822,7 +1822,8 @@ function add_extra_params_nmcli {
         if [ -n "$name" -a -n "$value" ]; then
             grep $name $str_conf_file >/dev/null 2>/dev/null
             if [ $? -eq 0 ]; then
-                sed -i 's/^$name.*/$name=\"$vlaue\"/g' $str_conf_file
+                replacevalue="$name=$value"
+                sed -i "s/^$name=.*/$replacevalue/" $str_conf_file
             else
                 echo "$name="$value"" >> $str_conf_file
             fi