diff --git a/conf/default.conf.php b/conf/default.conf.php
index 1c3a4e140b..258e59d7ac 100644
--- a/conf/default.conf.php
+++ b/conf/default.conf.php
@@ -967,18 +967,6 @@ return array(
   // class names of classes that extend PhutilRemarkupEngineBlockRule
   'differential.custom-remarkup-block-rules' => null,
 
-  // Set display word-wrap widths for Differential. Specify a dictionary of
-  // regular expressions mapping to column widths. The filename will be matched
-  // against each regexp in order until one matches. The default configuration
-  // uses a width of 100 for Java and 80 for other languages. Note that 80 is
-  // the greatest column width of all time. Changes here will not be immediately
-  // reflected in old revisions unless you purge the changeset render cache
-  // (with `./scripts/util/purge_cache.php --changesets`).
-  'differential.wordwrap' => array(
-    '/\.java$/' => 100,
-    '/.*/'      => 80,
-  ),
-
   // List of file regexps where whitespace is meaningful and should not
   // use 'ignore-all' by default
   'differential.whitespace-matters' => array(