diff --git a/frontend/src/components/UploadDialog.tsx b/frontend/src/components/UploadDialog.tsx
index 4704af3..e108fea 100644
--- a/frontend/src/components/UploadDialog.tsx
+++ b/frontend/src/components/UploadDialog.tsx
@@ -1,4 +1,4 @@
-import { useState, useCallback } from 'react';
+import { useState, useCallback, useEffect } from 'react';
 import { useDropzone } from 'react-dropzone';
 import {
   Dialog,
@@ -42,6 +42,13 @@ export default function UploadDialog({ open, onClose, onComplete, currentFolderI
   const [files, setFiles] = useState<UploadFile[]>([]);
   const [uploading, setUploading] = useState(false);
 
+  // Reset state when dialog closes
+  useEffect(() => {
+    if (!open && !uploading) {
+      setFiles([]);
+    }
+  }, [open, uploading]);
+
   const onDrop = useCallback((acceptedFiles: File[]) => {
     const newFiles: UploadFile[] = acceptedFiles.map((file) => ({
       file,