diff --git a/lib/main/build-doc.js b/lib/main/build-doc.js
index 97569549c..6c5f22b57 100644
--- a/lib/main/build-doc.js
+++ b/lib/main/build-doc.js
@@ -33,13 +33,8 @@ var config = {
 };
 
 function postprocess(string) {
-  // Fix docdown bugs.
-  return string
-    // Repair the default value of `chars`.
-    // See https://github.com/eslint/doctrine/issues/157 for more details.
-    .replace(/\bchars=''/g, "chars=' '")
-    // Wrap symbol property identifiers in brackets.
-    .replace(/\.(Symbol\.(?:[a-z]+[A-Z]?)+)/g, '[$1]');
+  // Wrap symbol property identifiers in brackets.
+  return string.replace(/\.(Symbol\.(?:[a-z]+[A-Z]?)+)/g, '[$1]');
 }
 
 /*----------------------------------------------------------------------------*/