diff --git a/system/autoload/Message.php b/system/autoload/Message.php
index 1f880f03..ac6b73e7 100644
--- a/system/autoload/Message.php
+++ b/system/autoload/Message.php
@@ -174,7 +174,7 @@ class Message
         $msg = str_replace('[[package]]', $package, $msg);
         $msg = str_replace('[[price]]', Lang::moneyFormat($price), $msg);
         list($bills, $add_cost) = User::getBills($customer['id']);
-        if ($add_cost > 0) {
+        if ($add_cost != 0) {
             $note = "";
             foreach ($bills as $k => $v) {
                 $note .= $k . " : " . Lang::moneyFormat($v) . "\n";
diff --git a/system/autoload/Package.php b/system/autoload/Package.php
index 8d042812..df0ccc1c 100644
--- a/system/autoload/Package.php
+++ b/system/autoload/Package.php
@@ -64,7 +64,7 @@ class Package
         } else {
             // Additional cost
             list($bills, $add_cost) = User::getBills($id_customer);
-            if ($add_cost > 0 && $router_name != 'balance') {
+            if ($add_cost != 0 && $router_name != 'balance') {
                 foreach ($bills as $k => $v) {
                     $note .= $k . " : " . Lang::moneyFormat($v) . "\n";
                 }
diff --git a/system/cron.php b/system/cron.php
index 81d9f423..88509a85 100644
--- a/system/cron.php
+++ b/system/cron.php
@@ -71,7 +71,7 @@ foreach ($d as $ds) {
         // autorenewal from deposit
         if ($config['enable_balance'] == 'yes' && $c['auto_renewal']) {
             list($bills, $add_cost) = User::getBills($ds['customer_id']);
-            if ($add_cost > 0) {
+            if ($add_cost != 0) {
                 if (!empty($add_cost)) {
                     $p['price'] += $add_cost;
                 }
diff --git a/ui/ui/recharge-confirm.tpl b/ui/ui/recharge-confirm.tpl
index 2b841873..69131344 100644
--- a/ui/ui/recharge-confirm.tpl
+++ b/ui/ui/recharge-confirm.tpl
@@ -66,7 +66,7 @@
                     </ul>
                     <center><b>{Lang::T('Total')}</b></center>
                     <ul class="list-group list-group-unbordered">
-                        {if $using neq 'zero' and $add_cost>0}
+                        {if $using neq 'zero' and $add_cost != 0}
                             {foreach $bills as $k => $v}
                                 <li class="list-group-item">
                                     <b>{$k}</b> <span class="pull-right">{Lang::moneyFormat($v)}</span>
diff --git a/ui/ui/user-ui/orderView.tpl b/ui/ui/user-ui/orderView.tpl
index a8d5ab1a..b24359d9 100644
--- a/ui/ui/user-ui/orderView.tpl
+++ b/ui/ui/user-ui/orderView.tpl
@@ -75,7 +75,7 @@
                                 <td>{Lang::T('Plan Name')}</td>
                                 <td>{$plan['name_plan']}</td>
                             </tr>
-                            {if $add_cost>0}
+                            {if $add_cost!=0}
                                 {foreach $bills as $k => $v}
                                     <tr>
                                         <td>{$k}</td>
@@ -88,7 +88,7 @@
                                 </tr>
                             {/if}
                             <tr>
-                                <td>{Lang::T('Plan Price')}{if $add_cost>0}<small> +
+                                <td>{Lang::T('Plan Price')}{if $add_cost!=0}<small> +
                                         {Lang::T('Additional Cost')}{/if}</small></td>
                                 <td
                                     style="font-size: large; font-weight:bolder; font-family: 'Courier New', Courier, monospace; ">
diff --git a/ui/ui/user-ui/selectGateway.tpl b/ui/ui/user-ui/selectGateway.tpl
index 8c649034..c588c6fa 100644
--- a/ui/ui/user-ui/selectGateway.tpl
+++ b/ui/ui/user-ui/selectGateway.tpl
@@ -66,7 +66,7 @@
                         <li class="list-group-item">
                             <b>{Lang::T('Tax')}</b> <span class="pull-right">{Lang::moneyFormat($tax)}</span>
                         </li>
-                        {if $add_cost>0}
+                        {if $add_cost!=0}
                             {foreach $bills as $k => $v}
                                 <li class="list-group-item">
                                     <b>{$k}</b> <span class="pull-right">{Lang::moneyFormat($v)}</span>
@@ -89,7 +89,7 @@
                             </li>
                         {/if}
                     {else}
-                        {if $add_cost>0}
+                        {if $add_cost!=0}
                             {foreach $bills as $k => $v}
                                 <li class="list-group-item">
                                     <b>{$k}</b> <span class="pull-right">{Lang::moneyFormat($v)}</span>
diff --git a/ui/ui/user-ui/sendPlan.tpl b/ui/ui/user-ui/sendPlan.tpl
index 2ae39b02..2ca00953 100644
--- a/ui/ui/user-ui/sendPlan.tpl
+++ b/ui/ui/user-ui/sendPlan.tpl
@@ -12,7 +12,7 @@
                             <td>{Lang::T('Type')}</td>
                             <td>{$plan['type']}</td>
                         </tr>
-                        {if $add_cost>0}
+                        {if $add_cost!=0}
                         {foreach $bills as $k => $v}
                         <tr>
                             <td>{$k}</td>
@@ -31,7 +31,7 @@
                         </tr>
                         {/if}
                         <tr>
-                            <td>{Lang::T('Price')}{if $add_cost>0}<small> + {Lang::T('Additional Cost')}{/if}{if
+                            <td>{Lang::T('Price')}{if $add_cost!=0}<small> + {Lang::T('Additional Cost')}{/if}{if
                                     $tax>0}<small> + {Lang::T('Tax')}{/if}</td>
                             <td
                                 style="font-size: large; font-weight:bolder; font-family: 'Courier New', Courier, monospace; ">