diff --git a/src/main/resources/static/js/fileInput.js b/src/main/resources/static/js/fileInput.js
index 1e537dfc7d5..671bb039a76 100644
--- a/src/main/resources/static/js/fileInput.js
+++ b/src/main/resources/static/js/fileInput.js
@@ -86,7 +86,7 @@ function setupFileInput(chooser) {
     if (element instanceof HTMLInputElement && element.hasAttribute("multiple")) {
       allFiles = isDragAndDrop ? allFiles : [... allFiles, ... element.files];
   } else {
-    allFiles = Array.from(isDragAndDrop ? allFiles : element.files[0]);
+    allFiles = Array.from(isDragAndDrop ? allFiles : [element.files[0]]);
   }
 
     if (!isDragAndDrop) {