--- a/xml/config.rnc	Mon May 18 00:36:23 2015 +0200
+++ b/xml/config.rnc	Sun May 24 17:35:37 2015 +0200
@@ -24,6 +24,7 @@
 			element url { text },
 			element userName { text }?,
 			element password { text }?,
+			element driver { text }?,
 			element property {
 				attribute name { text },
 				text