diff --git a/src/applications/differential/controller/DifferentialRevisionLandController.php b/src/applications/differential/controller/DifferentialRevisionLandController.php
index 4f8787956f..f2d2497a42 100644
--- a/src/applications/differential/controller/DifferentialRevisionLandController.php
+++ b/src/applications/differential/controller/DifferentialRevisionLandController.php
@@ -146,7 +146,7 @@ final class DifferentialRevisionLandController extends DifferentialController {
     $looksoon = new ConduitCall(
       'diffusion.looksoon',
       array(
-        'callsigns' => array($repository->getCallsign()),
+        'repositories' => array($repository->getPHID()),
       ));
     $looksoon->setUser($request->getUser());
     $looksoon->execute();
@@ -155,7 +155,7 @@ final class DifferentialRevisionLandController extends DifferentialController {
   }
 
   private function lockRepository($repository) {
-    $lock_name = __CLASS__.':'.($repository->getCallsign());
+    $lock_name = __CLASS__.':'.($repository->getPHID());
     $lock = PhabricatorGlobalLock::newLock($lock_name);
     $lock->lock();
     return $lock;
diff --git a/src/applications/diffusion/conduit/DiffusionLookSoonConduitAPIMethod.php b/src/applications/diffusion/conduit/DiffusionLookSoonConduitAPIMethod.php
index 49dd5dc117..88d216e4a1 100644
--- a/src/applications/diffusion/conduit/DiffusionLookSoonConduitAPIMethod.php
+++ b/src/applications/diffusion/conduit/DiffusionLookSoonConduitAPIMethod.php
@@ -24,7 +24,8 @@ final class DiffusionLookSoonConduitAPIMethod
 
   protected function defineParamTypes() {
     return array(
-      'callsigns' => 'required list<string>',
+      'callsigns' => 'optional list<string> (deprecated)',
+      'repositories' => 'optional list<string>',
       'urgency' => 'optional string',
     );
   }
@@ -33,14 +34,19 @@ final class DiffusionLookSoonConduitAPIMethod
     // NOTE: The "urgency" parameter does nothing, it is just a hilarious joke
     // which exemplifies the boundless clever wit of this project.
 
-    $callsigns = $request->getValue('callsigns');
-    if (!$callsigns) {
+    $identifiers = $request->getValue('repositories');
+
+    if (!$identifiers) {
+      $identifiers = $request->getValue('callsigns');
+    }
+
+    if (!$identifiers) {
       return null;
     }
 
     $repositories = id(new PhabricatorRepositoryQuery())
       ->setViewer($request->getUser())
-      ->withCallsigns($callsigns)
+      ->withIdentifiers($identifiers)
       ->execute();
 
     foreach ($repositories as $repository) {
diff --git a/src/applications/diffusion/controller/DiffusionController.php b/src/applications/diffusion/controller/DiffusionController.php
index 810286176b..1d0d27216b 100644
--- a/src/applications/diffusion/controller/DiffusionController.php
+++ b/src/applications/diffusion/controller/DiffusionController.php
@@ -212,7 +212,7 @@ abstract class DiffusionController extends PhabricatorController {
               'path' => '',
             )),
         ),
-        'r'.$drequest->getRepository()->getCallsign());
+        $drequest->getRepository()->getDisplayName());
       $links[] = $divider;
       $accum = '';
       $last_key = last_key($path_parts);
diff --git a/src/applications/diffusion/controller/DiffusionRepositoryEditUpdateController.php b/src/applications/diffusion/controller/DiffusionRepositoryEditUpdateController.php
index e50d297586..74df9c488b 100644
--- a/src/applications/diffusion/controller/DiffusionRepositoryEditUpdateController.php
+++ b/src/applications/diffusion/controller/DiffusionRepositoryEditUpdateController.php
@@ -25,8 +25,8 @@ final class DiffusionRepositoryEditUpdateController
 
     if ($request->isFormPost()) {
       $params = array(
-        'callsigns' => array(
-          $repository->getCallsign(),
+        'repositories' => array(
+          $repository->getPHID(),
         ),
       );