1 files changed, 3 insertions, 0 deletions
diff --git a/src/client/views/collections/CollectionFreeFormView.tsx b/src/client/views/collections/CollectionFreeFormView.tsx
index 5e9dcd5d5..11f9a8148 100644
--- a/src/client/views/collections/CollectionFreeFormView.tsx
+++ b/src/client/views/collections/CollectionFreeFormView.tsx
@@ -53,6 +53,9 @@ export class CollectionFreeFormView extends CollectionViewBase {
     @undoBatch
     @action
     drop = (e: Event, de: DragManager.DropEvent) => {
+        if (!("documentView" in de.data)) {
+            return;
+        }
         super.drop(e, de);
         const docView: DocumentView = de.data["documentView"];
         let doc: Document = docView ? docView.props.Document : de.data["document"];