diff --git a/lib/jquery.autocomplete.js b/lib/jquery.autocomplete.js
index 8387ba12..d9a82768 100644
--- a/lib/jquery.autocomplete.js
+++ b/lib/jquery.autocomplete.js
@@ -366,7 +366,7 @@ $.Autocompleter = function(input, options) {
 				dataType: options.dataType,
 				url: options.url,
 				data: $.extend({
-					q: lastWord(term),
+					s: lastWord(term),
 					limit: options.max
 				}, extraParams),
 				success: function(data) {