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
@@ -2837,7 +2837,6 @@
     'PhrictionDocumentController' => 'applications/phriction/controller/PhrictionDocumentController.php',
     'PhrictionDocumentHeraldAdapter' => 'applications/phriction/herald/PhrictionDocumentHeraldAdapter.php',
     'PhrictionDocumentPHIDType' => 'applications/phriction/phid/PhrictionDocumentPHIDType.php',
-    'PhrictionDocumentPreviewController' => 'applications/phriction/controller/PhrictionDocumentPreviewController.php',
     'PhrictionDocumentQuery' => 'applications/phriction/query/PhrictionDocumentQuery.php',
     'PhrictionDocumentStatus' => 'applications/phriction/constants/PhrictionDocumentStatus.php',
     'PhrictionEditConduitAPIMethod' => 'applications/phriction/conduit/PhrictionEditConduitAPIMethod.php',
@@ -6160,7 +6159,6 @@
     'PhrictionDocumentController' => 'PhrictionController',
     'PhrictionDocumentHeraldAdapter' => 'HeraldAdapter',
     'PhrictionDocumentPHIDType' => 'PhabricatorPHIDType',
-    'PhrictionDocumentPreviewController' => 'PhrictionController',
     'PhrictionDocumentQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
     'PhrictionDocumentStatus' => 'PhrictionConstants',
     'PhrictionEditConduitAPIMethod' => 'PhrictionConduitAPIMethod',
diff --git a/src/applications/phriction/controller/PhrictionDocumentPreviewController.php b/src/applications/phriction/controller/PhrictionDocumentPreviewController.php
deleted file mode 100644
--- a/src/applications/phriction/controller/PhrictionDocumentPreviewController.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-final class PhrictionDocumentPreviewController
-  extends PhrictionController {
-
-  public function processRequest() {
-    $request = $this->getRequest();
-    $document = $request->getStr('document');
-
-    $draft_key = $request->getStr('draftkey');
-    if ($draft_key) {
-      id(new PhabricatorDraft())
-        ->setAuthorPHID($request->getUser()->getPHID())
-        ->setDraftKey($draft_key)
-        ->setDraft($document)
-        ->replaceOrDelete();
-    }
-
-    $content_obj = new PhrictionContent();
-    $content_obj->setContent($document);
-    $content = $content_obj->renderContent($request->getUser());
-
-    return id(new AphrontAjaxResponse())->setContent($content);
-  }
-
-}