diff --git a/system/controllers/register.php b/system/controllers/register.php
index 80bf5e16..e1737c10 100644
--- a/system/controllers/register.php
+++ b/system/controllers/register.php
@@ -22,7 +22,7 @@ switch ($do) {
         $password = _post('password');
         $cpassword = _post('cpassword');
         $address = _post('address');
-        if (!empty($config['sms_url']) && $_c['allow_phone_otp'] == 'yes') {
+        if (!empty($config['sms_url']) && $_c['sms_otp_registration'] == 'yes') {
             $phonenumber = Lang::phoneFormat($username);
             $username = $phonenumber;
         } else if (strlen($username) < 21) {
@@ -45,7 +45,7 @@ switch ($do) {
             $msg .= Lang::T('Passwords does not match') . '<br>';
         }
 
-        if (!empty($config['sms_url']) && $_c['allow_phone_otp'] == 'yes') {
+        if (!empty($config['sms_url']) && $_c['sms_otp_registration'] == 'yes') {
             $otpPath .= sha1($username . $db_pass) . ".txt";
             run_hook('validate_otp'); #HOOK
             //expired 10 minutes
@@ -114,7 +114,7 @@ switch ($do) {
         break;
 
     default:
-        if (!empty($config['sms_url']) && $_c['allow_phone_otp'] == 'yes') {
+        if (!empty($config['sms_url']) && $_c['sms_otp_registration'] == 'yes') {
             $username = _post('username');
             if (!empty($username)) {
                 $d = ORM::for_table('tbl_customers')->where('username', $username)->find_one();
diff --git a/ui/ui/app-settings.tpl b/ui/ui/app-settings.tpl
index 8aa5e3cb..b578ec9f 100644
--- a/ui/ui/app-settings.tpl
+++ b/ui/ui/app-settings.tpl
@@ -212,11 +212,11 @@
                 <div class="form-group">
                     <label class="col-md-2 control-label">{Lang::T('SMS OTP Registration')}</label>
                     <div class="col-md-6">
-                        <select name="allow_phone_otp" id="allow_phone_otp" class="form-control">
+                        <select name="sms_otp_registration" id="sms_otp_registration" class="form-control">
                             <option value="no">
                                 {Lang::T('No')}
                             </option>
-                            <option value="yes" {if $_c['allow_phone_otp']=='yes' }selected="selected" {/if}>
+                            <option value="yes" {if $_c['sms_otp_registration']=='yes' }selected="selected" {/if}>
                                 {Lang::T('Yes')}
                             </option>
                         </select>