diff --git a/phpgwapi/inc/class.ischedule_client.inc.php b/phpgwapi/inc/class.ischedule_client.inc.php
index 987011eff4..cb195f2120 100644
--- a/phpgwapi/inc/class.ischedule_client.inc.php
+++ b/phpgwapi/inc/class.ischedule_client.inc.php
@@ -189,7 +189,9 @@ class ischedule_client
 		    array(
 		        'method'  => 'POST',
 		        'header'  => $header_string,
-		        //'timeout' => $timeout,	// max timeout in seconds
+		    	'user_agent' => 'EGroupware iSchedule client '.$GLOBALS['egw_info']['server']['versions']['phpgwapi'].' $Id$',
+		    	//'follow_location' => 1,	// default 1=follow
+		        //'timeout' => $timeout,	// max timeout in seconds (float)
 		        'content' => $content,
 		    )
 		);
@@ -252,7 +254,7 @@ class ischedule_client
 		if (!isset($this->capabilities))
 		{
 			$reader = new XMLReader();
-			if (!$reader->open($this->url.'?query=capabilities'))
+			if (!$reader->open($this->url.'?action=capabilities'))
 			{
 				throw new Exception("Could not read iSchedule server capabilities $this->url!");
 			}
diff --git a/phpgwapi/inc/class.ischedule_server.inc.php b/phpgwapi/inc/class.ischedule_server.inc.php
index ad07d28123..15cff701bf 100644
--- a/phpgwapi/inc/class.ischedule_server.inc.php
+++ b/phpgwapi/inc/class.ischedule_server.inc.php
@@ -377,9 +377,9 @@ class ischedule_server
 	}
 
 	/**
-	 * Serve an iSchedule GET request, currently only query=capabilities
+	 * Serve an iSchedule GET request, currently only action=capabilities
 	 *
-	 * GET /.well-known/ischedule?query=capabilities HTTP/1.1
+	 * GET /.well-known/ischedule?action=capabilities HTTP/1.1
 	 * Host: cal.example.com
 	 *
 	 * HTTP/1.1 200 OK
@@ -426,9 +426,9 @@ class ischedule_server
 	 */
 	protected function get()
 	{
-		if (!isset($_GET['query']) || $_GET['query'] !== 'capabilities')
+		if (!isset($_GET['query']) || $_GET['action'] !== 'capabilities')
 		{
-			error_log(__METHOD__."() invalid iSchedule request using GET without query=capabilities!");
+			error_log(__METHOD__."() invalid iSchedule request using GET without action=capabilities!");
 			header("HTTP/1.1 400 Bad Request");
 			return;
 		}