diff --git a/lib/renderer.js b/lib/renderer.js
index 550efbd..1f6ac35 100644
--- a/lib/renderer.js
+++ b/lib/renderer.js
@@ -56,7 +56,7 @@ default_rules.fence = function (tokens, idx, options, env, slf) {
     return highlighted + '\n';
   }
 
-  // If language exists, inject class gently, without mudofying original token.
+  // If language exists, inject class gently, without modifying original token.
   // May be, one day we will add .clone() for token and simplify this part, but
   // now we prefer to keep things local.
   if (info) {