diff --git a/lib/less/node/quoted.js b/lib/less/node/quoted.js
index 99017e9..fde137b 100644
--- a/lib/less/node/quoted.js
+++ b/lib/less/node/quoted.js
@@ -1,5 +1,10 @@
 node.Quoted = function Quoted(value) { this.value = value };
-node.Quoted.prototype.toCSS = function () {
-    var css = this.value;
-    return css;
+node.Quoted.prototype = {
+    toCSS: function () {
+        var css = this.value;
+        return css;
+    },
+    eval: function () {
+        return this;
+    }
 };