diff --git a/lib/less/parser.js b/lib/less/parser.js
index f22a43de..1aad1d94 100644
--- a/lib/less/parser.js
+++ b/lib/less/parser.js
@@ -728,7 +728,8 @@ less.Parser = function Parser(env) {
             //
             entity: function () {
                 return $(this.entities.literal) || $(this.entities.variable) || $(this.entities.url) ||
-                       $(this.entities.call)    || $(this.entities.keyword)  || $(this.entities.javascript);
+                       $(this.entities.call)    || $(this.entities.keyword)  || $(this.entities.javascript) ||
+                       $(this.comment);
             },
 
             //