diff --git a/OpenLDBWS.php b/OpenLDBWS.php
index 4eff3f5..7bf9e07 100644
--- a/OpenLDBWS.php
+++ b/OpenLDBWS.php
@@ -17,7 +17,7 @@ function __construct($accessToken,$trace=FALSE)
 
       if (extension_loaded("zlib")) $soapOptions["compression"] = SOAP_COMPRESSION_ACCEPT|SOAP_COMPRESSION_GZIP;
 
-      $this->soapClient = new SoapClient("http://lite.realtime.nationalrail.co.uk/OpenLDBWS/wsdl.aspx",$soapOptions);
+      $this->soapClient = new SoapClient("https://lite.realtime.nationalrail.co.uk/OpenLDBWS/wsdl.aspx",$soapOptions);
 
       $soapVar = new SoapVar(array("ns2:TokenValue"=>$this->accessToken),SOAP_ENC_OBJECT);