diff --git a/application/utils.inc.php b/application/utils.inc.php
index 3ab30d204..a039a098b 100644
--- a/application/utils.inc.php
+++ b/application/utils.inc.php
@@ -240,7 +240,7 @@ class utils
 		}
 		else
 		{
-			$sProtocol = isset($_SERVER['HTTPS']) ? 'https' : 'http';
+			$sProtocol = (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!="off")) ? 'https' : 'http';
 			if ($sProtocol == 'http')
 			{
 				$sPort = ($_SERVER['SERVER_PORT'] == 80) ? '' : ':'.$_SERVER['SERVER_PORT'];
diff --git a/pages/opensearch.xml.php b/pages/opensearch.xml.php
index 68c7393db..648509546 100644
--- a/pages/opensearch.xml.php
+++ b/pages/opensearch.xml.php
@@ -23,9 +23,9 @@
  * @license     http://www.opensource.org/licenses/gpl-3.0.html LGPL
  */
 
-	$sFullUrl = 'http'.(empty($_SERVER['HTTPS']) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/UI.php';
-	$sICOFullUrl = 'http'.(empty($_SERVER['HTTPS']) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/../images/iTop-icon.ico';
-	$sPNGFullUrl = 'http'.(empty($_SERVER['HTTPS']) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/../images/iTop-icon.png';
+	$sFullUrl = 'http'.((empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/UI.php';
+	$sICOFullUrl = 'http'.((empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/../images/iTop-icon.ico';
+	$sPNGFullUrl = 'http'.((empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/../images/iTop-icon.png';
 	header('Content-type: text/xml');
 ?>
 <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">
diff --git a/webservices/export.php b/webservices/export.php
index 3a63fa9b3..80d85ab36 100644
--- a/webservices/export.php
+++ b/webservices/export.php
@@ -59,7 +59,7 @@ if (!empty($sExpression))
 				// since this page is in a different folder, let's adjust the HTML 'base' attribute
 				// to make the relative hyperlinks in the page work
 				$sServerName = $_SERVER['SERVER_NAME'];
-				$sProtocol = isset($_SERVER['HTTPS']) ? 'https' : 'http';
+				$sProtocol = (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? 'https' : 'http';
 				if ($sProtocol == 'http')
 				{
 					$sPort = ($_SERVER['SERVER_PORT'] == 80) ? '' : ':'.$_SERVER['SERVER_PORT'];
diff --git a/webservices/itop.wsdl.php b/webservices/itop.wsdl.php
index 5590e0d2d..3a1a46fd4 100644
--- a/webservices/itop.wsdl.php
+++ b/webservices/itop.wsdl.php
@@ -33,7 +33,7 @@ $sMyWsdl = './itop.wsdl.tpl';
 
 $sRawFile = file_get_contents($sMyWsdl);
 
-$sServerURI = 'http'.(empty($_SERVER['HTTPS']) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/soapserver.php';
+$sServerURI = 'http'.((empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/soapserver.php';
 
 $sFinalFile = str_replace(
 	'___SOAP_SERVER_URI___',
diff --git a/webservices/itopsoap.examples.php b/webservices/itopsoap.examples.php
index 982aec523..e2c151cad 100644
--- a/webservices/itopsoap.examples.php
+++ b/webservices/itopsoap.examples.php
@@ -26,7 +26,7 @@
 
 require_once('itopsoaptypes.class.inc.php');
 
-$sItopRoot = 'http'.(empty($_SERVER['HTTPS']) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/..';
+$sItopRoot = 'http'.((empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/..';
 $sWsdlUri = $sItopRoot.'/webservices/itop.wsdl.php';
 
 ini_set("soap.wsdl_cache_enabled","0");
diff --git a/webservices/soapserver.php b/webservices/soapserver.php
index 077fc25cc..64ec33058 100644
--- a/webservices/soapserver.php
+++ b/webservices/soapserver.php
@@ -32,7 +32,7 @@ require_once('../application/startup.inc.php');
 require('./webservices.class.inc.php');
 
 // this file is generated dynamically with location = here
-$sWsdlUri = 'http'.(empty($_SERVER['HTTPS']) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/../webservices/itop.wsdl.php';
+$sWsdlUri = 'http'.((empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS']!='off')) ? '' : 's').'://'.$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].dirname($_SERVER['SCRIPT_NAME']).'/../webservices/itop.wsdl.php';
 
 
 ini_set("soap.wsdl_cache_enabled","0");