diff --git a/lib/index.js b/lib/index.js
index 558c97d..6b301e8 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -483,7 +483,7 @@ MarkdownIt.prototype.use = function (plugin /*, params, ... */) {
  * AST).
  *
  * `env` is used to pass data between "distributed" rules and return additional
- * metadata like reference info, needed for for renderer. It also can be used to
+ * metadata like reference info, needed for the renderer. It also can be used to
  * inject data in specific cases. Usually, you will be ok to pass `{}`,
  * and then pass updated object to renderer.
  **/