diff --git a/webapp/src/AppComponents/UploadFileDialog.tsx b/webapp/src/AppComponents/UploadFileDialog.tsx
index 18251c6..c8ec289 100644
--- a/webapp/src/AppComponents/UploadFileDialog.tsx
+++ b/webapp/src/AppComponents/UploadFileDialog.tsx
@@ -114,6 +114,7 @@ function UploadFileDialog(properties: {
           style={{ marginRight: 12 }}
           onClick={handleClose}
           title="Close Dialog"
+          ref={crossRef}
           tabIndex={0}
         >
           <X />