diff --git a/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php b/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php
index 6d68b0a8b6..9c3f88d631 100644
--- a/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php
+++ b/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php
@@ -256,10 +256,15 @@ final class HarbormasterSendMessageConduitAPIMethod
 
     // If the build has completely paused because all steps are blocked on
     // waiting targets, this will resume it.
+    $build = $build_target->getBuild();
+
     PhabricatorWorker::scheduleTask(
       'HarbormasterBuildWorker',
       array(
-        'buildID' => $build_target->getBuild()->getID(),
+        'buildID' => $build->getID(),
+      ),
+      array(
+        'objectPHID' => $build->getPHID(),
       ));
 
     return null;
diff --git a/src/applications/harbormaster/editor/HarbormasterBuildTransactionEditor.php b/src/applications/harbormaster/editor/HarbormasterBuildTransactionEditor.php
index b8c39146cb..0727a473ec 100644
--- a/src/applications/harbormaster/editor/HarbormasterBuildTransactionEditor.php
+++ b/src/applications/harbormaster/editor/HarbormasterBuildTransactionEditor.php
@@ -98,6 +98,9 @@ final class HarbormasterBuildTransactionEditor
       'HarbormasterBuildWorker',
       array(
         'buildID' => $build->getID(),
+      ),
+      array(
+        'objectPHID' => $build->getPHID(),
       ));
   }
 
diff --git a/src/applications/harbormaster/engine/HarbormasterBuildEngine.php b/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
index 36ca48b060..5eabd85034 100644
--- a/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
+++ b/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
@@ -81,6 +81,9 @@ final class HarbormasterBuildEngine extends Phobject {
         'HarbormasterTargetWorker',
         array(
           'targetID' => $target->getID(),
+        ),
+        array(
+          'objectPHID' => $target->getPHID(),
         ));
     }
 
diff --git a/src/applications/harbormaster/storage/HarbormasterBuildable.php b/src/applications/harbormaster/storage/HarbormasterBuildable.php
index 3a7df73f52..6286072b42 100644
--- a/src/applications/harbormaster/storage/HarbormasterBuildable.php
+++ b/src/applications/harbormaster/storage/HarbormasterBuildable.php
@@ -184,6 +184,9 @@ final class HarbormasterBuildable extends HarbormasterDAO
       'HarbormasterBuildWorker',
       array(
         'buildID' => $build->getID(),
+      ),
+      array(
+        'objectPHID' => $build->getPHID(),
       ));
 
     return $build;