diff --git a/src/applications/config/option/PhabricatorSyntaxHighlightingConfigOptions.php b/src/applications/config/option/PhabricatorSyntaxHighlightingConfigOptions.php
index 75d3e8ad6d..c4e62694f8 100644
--- a/src/applications/config/option/PhabricatorSyntaxHighlightingConfigOptions.php
+++ b/src/applications/config/option/PhabricatorSyntaxHighlightingConfigOptions.php
@@ -1,153 +1,153 @@
 <?php
 
 final class PhabricatorSyntaxHighlightingConfigOptions
   extends PhabricatorApplicationConfigOptions {
 
   public function getName() {
     return pht('Syntax Highlighting');
   }
 
   public function getDescription() {
     return pht('Options relating to syntax highlighting source code.');
   }
 
   public function getIcon() {
     return 'fa-code';
   }
 
   public function getGroup() {
     return 'core';
   }
 
   public function getOptions() {
     $caches_href = PhabricatorEnv::getDoclink('Managing Caches');
 
     return array(
       $this->newOption(
         'syntax-highlighter.engine',
         'class',
         'PhutilDefaultSyntaxHighlighterEngine')
         ->setBaseClass('PhutilSyntaxHighlighterEngine')
         ->setSummary(pht('Default non-pygments syntax highlighter engine.'))
         ->setDescription(
           pht(
             'Phabricator can highlight PHP by default and use Pygments for '.
             'other languages if enabled. You can provide a custom '.
             'highlighter engine by extending class %s.',
             'PhutilSyntaxHighlighterEngine')),
       $this->newOption('pygments.enabled', 'bool', false)
         ->setSummary(
           pht('Should Phabricator use Pygments to highlight code?'))
         ->setBoolOptions(
           array(
             pht('Use Pygments'),
             pht('Do Not Use Pygments'),
           ))
         ->setDescription(
           pht(
             'Phabricator supports syntax highlighting a few languages by '.
             'default, but you can install Pygments (a third-party syntax '.
             'highlighting tool) to provide support for many more languages.'.
             "\n\n".
             'To install Pygments, visit '.
             '[[ http://pygments.org | pygments.org ]] and follow the '.
             'download and install instructions.'.
             "\n\n".
             'Once Pygments is installed, enable this option '.
             '(`pygments.enabled`) to make Phabricator use Pygments when '.
             'highlighting source code.'.
             "\n\n".
             'After you install and enable Pygments, newly created source '.
             'code (like diffs and pastes) should highlight correctly. '.
             'You may need to clear Phabricator\'s caches to get previously '.
             'existing source code to highlight. For instructions on '.
             'managing caches, see [[ %s | Managing Caches ]].',
             $caches_href)),
       $this->newOption(
         'pygments.dropdown-choices',
         'wild',
         array(
           'apacheconf' => 'Apache Configuration',
           'bash' => 'Bash Scripting',
           'brainfuck' => 'Brainf*ck',
           'c' => 'C',
           'coffee-script' => 'CoffeeScript',
           'cpp' => 'C++',
           'csharp' => 'C#',
           'css' => 'CSS',
           'd' => 'D',
           'diff' => 'Diff',
           'django' => 'Django Templating',
           'docker' => 'Docker',
           'erb' => 'Embedded Ruby/ERB',
           'erlang' => 'Erlang',
           'go' => 'Golang',
           'groovy' => 'Groovy',
           'haskell' => 'Haskell',
           'html' => 'HTML',
           'http' => 'HTTP',
           'invisible' => 'Invisible',
           'java' => 'Java',
           'js' => 'Javascript',
           'json' => 'JSON',
           'make' => 'Makefile',
           'mysql' => 'MySQL',
           'nginx' => 'Nginx Configuration',
           'objc' => 'Objective-C',
           'perl' => 'Perl',
           'php' => 'PHP',
           'postgresql' => 'PostgreSQL',
           'pot' => 'Gettext Catalog',
           'puppet' => 'Puppet',
           'python' => 'Python',
           'rainbow' => 'Rainbow',
           'remarkup' => 'Remarkup',
           'rst' => 'reStructuredText',
           'robotframework' => 'RobotFramework',
           'ruby' => 'Ruby',
           'sql' => 'SQL',
           'tex' => 'LaTeX',
           'text' => 'Plain Text',
           'twig' => 'Twig',
           'xml' => 'XML',
           'yaml' => 'YAML',
         ))
         ->setSummary(
           pht('Set the language list which appears in dropdowns.'))
         ->setDescription(
           pht(
             'In places that we display a dropdown to syntax-highlight code, '.
             'this is where that list is defined.')),
       $this->newOption(
         'syntax.filemap',
         'wild',
         array(
-          '@\.arcconfig$@' => 'js',
-          '@\.arclint$@' => 'js',
-          '@\.divinerconfig$@' => 'js',
+          '@\.arcconfig$@' => 'json',
+          '@\.arclint$@' => 'json',
+          '@\.divinerconfig$@' => 'json',
         ))
         ->setSummary(
           pht('Override what language files (based on filename) highlight as.'))
         ->setDescription(
           pht(
             'This is an override list of regular expressions which allows '.
             'you to choose what language files are highlighted as. If your '.
             'projects have certain rules about filenames or use unusual or '.
             'ambiguous language extensions, you can create a mapping here. '.
             'This is an ordered dictionary of regular expressions which will '.
             'be tested against the filename. They should map to either an '.
             'explicit language as a string value, or a numeric index into '.
             'the captured groups as an integer.'))
       ->addExample('{"@\\.xyz$@": "php"}', pht('Highlight %s as PHP.', '*.xyz'))
       ->addExample(
         '{"@/httpd\\.conf@": "apacheconf"}',
         pht('Highlight httpd.conf as "apacheconf".'))
       ->addExample(
         '{"@\\.([^.]+)\\.bak$@": 1}',
         pht(
           "Treat all '*.x.bak' file as '.x'. NOTE: We map to capturing group ".
           "1 by specifying the mapping as '1'")),
     );
   }
 
 }