diff --git a/lib/less/parser.js b/lib/less/parser.js
index 20289e10..c6031a9c 100644
--- a/lib/less/parser.js
+++ b/lib/less/parser.js
@@ -793,7 +793,7 @@ less.Parser = function Parser(env) {
                 //     black border-collapse
                 //
                 keyword: function () {
-                    var k = $(/^[_A-Za-z-][_A-Za-z0-9-]*/);
+                    var k = $re(/^[_A-Za-z-][_A-Za-z0-9-]*/);
                     if (k) {
                         return tree.Color.fromKeyword(k) || new(tree.Keyword)(k);
                     }