diff --git a/lib/less/parser.js b/lib/less/parser.js
index caf89bd..375c5fb 100644
--- a/lib/less/parser.js
+++ b/lib/less/parser.js
@@ -159,7 +159,8 @@ less.parser = {
             var node;
 
             while (node = $(this.ruleset, []) || $(this.rule) || $(this.mixin.definition, []) ||
-                          $(this.mixin.call)  || $(/\/\*([^*]|\*+[^\/*])*\*+\//g) || $(/[\n\s]+/g) || $(this.directive)) {
+                          $(this.mixin.call)  || $(/\/\*([^*]|\*+[^\/*])*\*+\//g) || $(/\/\/.*/g) ||
+                          $(/[\n\s]+/g)       || $(this.directive)) {
                 root.push(node);
             }
             return root;