Index: src/ajax.js
===================================================================
--- src/ajax.js	(revision 6026)
+++ src/ajax.js	(working copy)
@@ -100,6 +100,7 @@
 	get: function( url, data, callback, type ) {
 		// shift arguments if data argument was ommited
 		if ( jQuery.isFunction( data ) ) {
+			type = callback;
 			callback = data;
 			data = null;
 		}