diff --git a/src/applications/differential/controller/DifferentialDiffViewController.php b/src/applications/differential/controller/DifferentialDiffViewController.php
index 8e78d14374..7cc4a4bcb9 100644
--- a/src/applications/differential/controller/DifferentialDiffViewController.php
+++ b/src/applications/differential/controller/DifferentialDiffViewController.php
@@ -133,7 +133,7 @@ final class DifferentialDiffViewController extends DifferentialController {
       ->setRenderingReferences($refs)
       ->setStandaloneURI('/differential/changeset/')
       ->setDiff($diff)
-      ->setTitle('D'.$diff->getID())
+      ->setTitle('Diff '.$diff->getID())
       ->setUser($request->getUser());
 
     return $this->buildStandardPageResponse(
diff --git a/src/applications/differential/controller/DifferentialRevisionViewController.php b/src/applications/differential/controller/DifferentialRevisionViewController.php
index a4b49ea760..63ee3aec00 100644
--- a/src/applications/differential/controller/DifferentialRevisionViewController.php
+++ b/src/applications/differential/controller/DifferentialRevisionViewController.php
@@ -304,7 +304,7 @@ final class DifferentialRevisionViewController extends DifferentialController {
       $changeset_view->setRepository($repository);
     }
     $changeset_view->setSymbolIndexes($symbol_indexes);
-    $changeset_view->setTitle('D'.$target->getID());
+    $changeset_view->setTitle('Diff '.$target->getID());
 
     $diff_history = new DifferentialRevisionUpdateHistoryView();
     $diff_history->setDiffs($diffs);