diff --git a/src/applications/differential/xaction/DifferentialRevisionTitleTransaction.php b/src/applications/differential/xaction/DifferentialRevisionTitleTransaction.php
--- a/src/applications/differential/xaction/DifferentialRevisionTitleTransaction.php
+++ b/src/applications/differential/xaction/DifferentialRevisionTitleTransaction.php
@@ -23,6 +23,18 @@
   }
 
   public function getTitleForFeed() {
+    $obj = $this->getObject();
+
+    // Avoid potentially very long repetition in the Feed such as:
+    //   "Alice bla bla: retitled from Poldo to Alice bla bla"
+    if ($obj && $obj->getTitle() === $this->getNewValue()) {
+      return pht(
+        '%s retitled %s from %s',
+        $this->renderAuthor(),
+        $this->renderObject(),
+        $this->renderOldValue());
+    }
+
     return pht(
       '%s retitled %s from %s to %s.',
       $this->renderAuthor(),