diff --git a/lib/ace/mode/jsx_highlight_rules.js b/lib/ace/mode/jsx_highlight_rules.js
index dc7c8253..0700b011 100644
--- a/lib/ace/mode/jsx_highlight_rules.js
+++ b/lib/ace/mode/jsx_highlight_rules.js
@@ -63,7 +63,7 @@ define(function(require, exports, module) {
                         "text",
                         "entity.name.function"
                     ],
-                    regex : "(function)(\\s*)(" + identifierRe + ")"
+                    regex : "(function)(\\s+)(" + identifierRe + ")"
                 }, {
                     token : function(value) {
                         if (value == "this")