diff --git a/src/applications/repository/storage/PhabricatorRepository.php b/src/applications/repository/storage/PhabricatorRepository.php
--- a/src/applications/repository/storage/PhabricatorRepository.php
+++ b/src/applications/repository/storage/PhabricatorRepository.php
@@ -8,7 +8,8 @@
     PhabricatorPolicyInterface,
     PhabricatorFlaggableInterface,
     PhabricatorMarkupInterface,
-    PhabricatorDestructableInterface {
+    PhabricatorDestructableInterface,
+    PhabricatorProjectInterface {
 
   /**
    * Shortest hash we'll recognize in raw "a829f32" form.