diff --git a/src/models/view/attachmentView.ts b/src/models/view/attachmentView.ts
index 49ea57326d1..efb0081efa2 100644
--- a/src/models/view/attachmentView.ts
+++ b/src/models/view/attachmentView.ts
@@ -9,7 +9,11 @@ export class AttachmentView implements View {
     sizeName: string;
     fileName: string;
 
-    constructor(a: Attachment) {
+    constructor(a?: Attachment) {
+        if (!a) {
+            return;
+        }
+
         this.id = a.id;
         this.url = a.url;
         this.size = a.size;