diff --git a/src/applications/differential/parser/changeset/DifferentialChangesetParser.php b/src/applications/differential/parser/changeset/DifferentialChangesetParser.php
index f2641b32d0..4b7812f2c8 100644
--- a/src/applications/differential/parser/changeset/DifferentialChangesetParser.php
+++ b/src/applications/differential/parser/changeset/DifferentialChangesetParser.php
@@ -699,6 +699,9 @@ EOSYNTHETIC;
     $mask_force   = array()) {
 
     $this->highlightEngine = new PhutilDefaultSyntaxHighlighterEngine();
+    $this->highlightEngine->setConfig(
+      'pygments.enabled',
+      PhabricatorEnv::getEnvConfig('pygments.enabled'));
 
     $this->tryCacheStuff();
 
diff --git a/src/applications/differential/parser/changeset/__init__.php b/src/applications/differential/parser/changeset/__init__.php
index 4164de3c3c..2dc0087010 100644
--- a/src/applications/differential/parser/changeset/__init__.php
+++ b/src/applications/differential/parser/changeset/__init__.php
@@ -14,6 +14,7 @@ phutil_require_module('phabricator', 'applications/differential/storage/changese
 phutil_require_module('phabricator', 'applications/differential/storage/diff');
 phutil_require_module('phabricator', 'applications/differential/view/inlinecomment');
 phutil_require_module('phabricator', 'applications/files/uri');
+phutil_require_module('phabricator', 'infrastructure/env');
 phutil_require_module('phabricator', 'infrastructure/javelin/markup');
 phutil_require_module('phabricator', 'storage/queryfx');