diff --git a/src/infrastructure/diff/view/PHUIDiffTableOfContentsItemView.php b/src/infrastructure/diff/view/PHUIDiffTableOfContentsItemView.php
index a029916f86..13ab61de64 100644
--- a/src/infrastructure/diff/view/PHUIDiffTableOfContentsItemView.php
+++ b/src/infrastructure/diff/view/PHUIDiffTableOfContentsItemView.php
@@ -267,7 +267,7 @@ final class PHUIDiffTableOfContentsItemView extends AphrontView {
         }
       }
     } else if ($type == DifferentialChangeType::TYPE_COPY_HERE) {
-      $meta = pht('Copied from %s', $changeset->getOldFile());
+      $meta[] = pht('Copied from %s', $changeset->getOldFile());
     }
 
     if (!$meta) {