diff --git a/PHP/proxy.php b/PHP/proxy.php
index 4f43a567..49cd8f3a 100644
--- a/PHP/proxy.php
+++ b/PHP/proxy.php
@@ -1092,7 +1092,7 @@ public function proxyGet($url = null) {
         return;
     }
 
-    public function proxyPost($url, $params)
+    public function proxyPost($url = null, $params = null)
     {
         $this->response = null;