diff --git a/Zotero/Scenes/Detail/ItemDetail/Views/ItemDetailViewController.swift b/Zotero/Scenes/Detail/ItemDetail/Views/ItemDetailViewController.swift
index 79ef89cd6..5ee866f62 100644
--- a/Zotero/Scenes/Detail/ItemDetail/Views/ItemDetailViewController.swift
+++ b/Zotero/Scenes/Detail/ItemDetail/Views/ItemDetailViewController.swift
@@ -93,7 +93,7 @@ final class ItemDetailViewController: UIViewController {
         super.viewWillTransition(to: size, with: coordinator)
 
         coordinator.animate(alongsideTransition: { _ in
-            self.collectionView.reloadData()
+            self.collectionView?.reloadData()
         }, completion: nil)
     }