diff --git a/src/applications/differential/customfield/DifferentialDraftField.php b/src/applications/differential/customfield/DifferentialDraftField.php
index e37d622a33..e7ed2bedb2 100644
--- a/src/applications/differential/customfield/DifferentialDraftField.php
+++ b/src/applications/differential/customfield/DifferentialDraftField.php
@@ -1,90 +1,90 @@
 <?php
 
 final class DifferentialDraftField
   extends DifferentialCoreCustomField {
 
   public function getFieldKey() {
     return 'differential:draft';
   }
 
   public function getFieldName() {
     return pht('Draft');
   }
 
   public function getFieldDescription() {
     return pht('Show a warning about draft revisions.');
   }
 
   protected function readValueFromRevision(
     DifferentialRevision $revision) {
     return null;
   }
 
   public function shouldAppearInPropertyView() {
     return true;
   }
 
-  public function renderPropertyViewValue() {
+  public function renderPropertyViewValue(array $handles) {
     return null;
   }
 
   public function getWarningsForRevisionHeader(array $handles) {
     $viewer = $this->getViewer();
     $revision = $this->getObject();
 
     if (!$revision->isDraft()) {
       return array();
     }
 
     $warnings = array();
 
     $blocking_map = array(
       HarbormasterBuildStatus::STATUS_FAILED,
       HarbormasterBuildStatus::STATUS_ABORTED,
       HarbormasterBuildStatus::STATUS_ERROR,
       HarbormasterBuildStatus::STATUS_PAUSED,
       HarbormasterBuildStatus::STATUS_DEADLOCKED,
     );
     $blocking_map = array_fuse($blocking_map);
 
     $builds = $revision->loadActiveBuilds($viewer);
 
     $waiting = array();
     $blocking = array();
     foreach ($builds as $build) {
       if (isset($blocking_map[$build->getBuildStatus()])) {
         $blocking[] = $build;
       } else {
         $waiting[] = $build;
       }
     }
 
     $blocking_list = $viewer->renderHandleList(mpull($blocking, 'getPHID'))
       ->setAsInline(true);
     $waiting_list = $viewer->renderHandleList(mpull($waiting, 'getPHID'))
       ->setAsInline(true);
 
     if ($blocking) {
       $warnings[] = pht(
         'This draft revision will not be submitted for review because %s '.
         'build(s) failed: %s.',
         phutil_count($blocking),
         $blocking_list);
       $warnings[] = pht(
         'Fix build failures and update the revision.');
     } else if ($waiting) {
       $warnings[] = pht(
         'This draft revision will be sent for review once %s '.
         'build(s) pass: %s.',
         phutil_count($waiting),
         $waiting_list);
     } else {
       $warnings[] = pht(
         'This is a draft revision that has not yet been submitted for '.
         'review.');
     }
 
     return $warnings;
   }
 
 }