diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1436,7 +1436,6 @@
     'PhabricatorChatLogChannelListController' => 'applications/chatlog/controller/PhabricatorChatLogChannelListController.php',
     'PhabricatorChatLogChannelLogController' => 'applications/chatlog/controller/PhabricatorChatLogChannelLogController.php',
     'PhabricatorChatLogChannelQuery' => 'applications/chatlog/query/PhabricatorChatLogChannelQuery.php',
-    'PhabricatorChatLogConstants' => 'applications/chatlog/constants/PhabricatorChatLogConstants.php',
     'PhabricatorChatLogController' => 'applications/chatlog/controller/PhabricatorChatLogController.php',
     'PhabricatorChatLogDAO' => 'applications/chatlog/storage/PhabricatorChatLogDAO.php',
     'PhabricatorChatLogEvent' => 'applications/chatlog/storage/PhabricatorChatLogEvent.php',
diff --git a/src/applications/chatlog/constants/PhabricatorChatLogConstants.php b/src/applications/chatlog/constants/PhabricatorChatLogConstants.php
deleted file mode 100644
--- a/src/applications/chatlog/constants/PhabricatorChatLogConstants.php
+++ /dev/null
@@ -1,3 +0,0 @@
-<?php
-
-abstract class PhabricatorChatLogConstants {}