diff --git a/src/applications/repository/worker/PhabricatorRepositoryCommitHeraldWorker.php b/src/applications/repository/worker/PhabricatorRepositoryCommitHeraldWorker.php
index f65f2a1750..70b5373754 100644
--- a/src/applications/repository/worker/PhabricatorRepositoryCommitHeraldWorker.php
+++ b/src/applications/repository/worker/PhabricatorRepositoryCommitHeraldWorker.php
@@ -3,6 +3,8 @@
 final class PhabricatorRepositoryCommitHeraldWorker
   extends PhabricatorRepositoryCommitParserWorker {
 
+  const MAX_FILES_SHOWN_IN_EMAIL = 1000;
+
   public function getRequiredLeaseTime() {
     // Herald rules may take a long time to process.
     return phutil_units('4 hours in seconds');
@@ -138,13 +140,13 @@ final class PhabricatorRepositoryCommitHeraldWorker
       ? PhabricatorEnv::getProductionURI('/D'.$revision->getID())
       : 'No revision.';
 
-    $limit = 1000;
+    $limit = self::MAX_FILES_SHOWN_IN_EMAIL;
     $files = $adapter->loadAffectedPaths();
     sort($files);
     if (count($files) > $limit) {
       array_splice($files, $limit);
-      $files[] = '(This commit affected more than 1000 files. '.
-        'Only 1000 are shown here and additional ones are truncated.)';
+      $files[] = '(This commit affected more than '.$limit.' files. '.
+        'Only '.$limit.' are shown here and additional ones are truncated.)';
     }
     $files = implode("\n", $files);