diff --git a/src/nusoap.php b/src/nusoap.php
index 11f2c89..1eb60fb 100644
--- a/src/nusoap.php
+++ b/src/nusoap.php
@@ -2821,7 +2821,9 @@ function isSkippableCurlHeader($data)
             'HTTP/1.0 401',
             'HTTP/1.1 401',
             'HTTP/1.0 200 Connection established',
-            'HTTP/1.1 200 Connection established');
+            'HTTP/1.0 200 Connection Established',
+            'HTTP/1.1 200 Connection established',
+            'HTTP/1.1 200 Connection Established');
         foreach ($skipHeaders as $hd) {
             $prefix = substr($data, 0, strlen($hd));
             if ($prefix == $hd) {