diff --git a/internal_packages/attachments/lib/message-attachments.jsx b/internal_packages/attachments/lib/message-attachments.jsx
index d5f623047..a7ee3dd8b 100644
--- a/internal_packages/attachments/lib/message-attachments.jsx
+++ b/internal_packages/attachments/lib/message-attachments.jsx
@@ -16,6 +16,7 @@ class MessageAttachments extends Component {
 
   static defaultProps = {
     downloads: {},
+    filePreviewPaths: {},
   }
 
   onOpenAttachment = (file) => {