diff --git a/src/contents/notebook.tsx b/src/contents/notebook.tsx
index 5ed64e29370c0aeee5f8f08d77c0c624a363322a..a272bc16c6065987bb1aa78395441b692752e48e 100644
--- a/src/contents/notebook.tsx
+++ b/src/contents/notebook.tsx
@@ -36,7 +36,7 @@ export function Notebook() {
       </div>
       <div className='row'>
         <div className="col">
-        <DownloadImageButton url="" fileName="">
+        <DownloadImageButton url="https://static.igem.wiki/teams/5247/pdfs/lab-book-5-downstream-experiments.pdf" fileName="lab-book-5-downstream.webp">
             <img src="https://static.igem.wiki/teams/5247/lab-journals/titelseite-lab-book-5-downstream.webp" style={{height: "75%", width: "auto"}}/>
             </DownloadImageButton>
         </div>