diff --git a/src/nusoap.php b/src/nusoap.php
index 800c81c..7852441 100755
--- a/src/nusoap.php
+++ b/src/nusoap.php
@@ -2432,7 +2432,7 @@ function connect($connection_timeout = 0, $response_timeout = 30)
 
             // set response timeout
             $this->debug('set response timeout to ' . $response_timeout);
-            socket_set_timeout($this->fp, $response_timeout);
+            socket_set_timeout($this->fp, $response_timeout, 0);
 
             $this->debug('socket connected');
             return true;