diff --git a/xCAT/postscripts/confignics b/xCAT/postscripts/confignics
index bcfbe3cbd..5e2803f5b 100755
--- a/xCAT/postscripts/confignics
+++ b/xCAT/postscripts/confignics
@@ -19,16 +19,19 @@ function splitconfig(){
     IFS=$','
     array_conf_temp=($1)
     IFS=$old_ifs
-    for i in ${array_conf_temp[@]}
+
+    i=0
+    while [ $i -lt ${#array_conf_temp[@]} ]
     do
+        token="${array_conf_temp[$i]}"
         D=
-        if [ `echo $i | grep "!"` ];then
+        if echo "$token" | grep "!"; then
             D="!"
         else
             D=":"
         fi
-        key=`echo $i | cut -d"$D" -f 1`
-        str_temp_value=`echo $i | cut -d"$D" -f 2`
+        key=`echo "$token" | cut -d"$D" -f 1`
+        str_temp_value=`echo "$token" | cut -d"$D" -f 2`
         
         str_temp=$(hashget hash_defined_nics $key)
         if [ -n "$str_temp" ];then
@@ -37,7 +40,8 @@ function splitconfig(){
            str_temp="$str_temp_value"
            str_all_nics=$str_all_nics"$key "
         fi
-        hashset hash_defined_nics $key $str_temp
+        hashset hash_defined_nics $key "$str_temp"
+        i=$((i+1))
     done
 }
 
@@ -198,8 +202,8 @@ if [ -z "$NICIPS" ];then
     exit 0
 fi
 
-splitconfig $NICIPS
-splitconfig $NICCUSTOMSCRIPTS
+splitconfig "$NICIPS"
+splitconfig "$NICCUSTOMSCRIPTS"
 
 if [ $boot_myscript -eq 1 ];then
     . $str_dir_name/$myscript