diff --git a/AioSDK/sdk/AllPay.Payment.Integration.php b/AioSDK/sdk/AllPay.Payment.Integration.php
index 2cbb7c0..0149a97 100644
--- a/AioSDK/sdk/AllPay.Payment.Integration.php
+++ b/AioSDK/sdk/AllPay.Payment.Integration.php
@@ -554,7 +554,7 @@ function AioCapture(){
 abstract class Aio
 {
     
-    protected function ServerPost($parameters ,$ServiceURL) {
+    protected static function ServerPost($parameters ,$ServiceURL) {
         $ch = curl_init();
 
         curl_setopt($ch, CURLOPT_URL, $ServiceURL);
@@ -1967,4 +1967,4 @@ private static function merchantSort($a,$b)
 }
 
 
-?>
\ No newline at end of file
+?>