diff --git a/lib/less/node/mixin.js b/lib/less/node/mixin.js
index 7722fed6..3c5596c1 100644
--- a/lib/less/node/mixin.js
+++ b/lib/less/node/mixin.js
@@ -7,7 +7,7 @@ tree.mixin.Call = function MixinCall(elements, args) {
 };
 tree.mixin.Call.prototype = {
     eval: function (env) {
-        var mixin, rules = [];
+        var mixins, rules = [];
 
         for (var i = 0; i < env.frames.length; i++) {
             if ((mixins = env.frames[i].find(this.selector)).length > 0) {