diff --git a/frontend/files/app.js b/frontend/files/app.js
index 87d0b4e..c43f19a 100644
--- a/frontend/files/app.js
+++ b/frontend/files/app.js
@@ -69,8 +69,8 @@ function apiResponseParsing(book) {
   if (!book["isbn-10"] && book["isbn-13"]) {
     book["isbn-10"] = ISBNfromEAN(book["isbn-13"]);
   }
-  if (!book.coverurl && book["isbn-10"]) {
-    book.coverurl =
+  if (!book.coverURL && book["isbn-10"]) {
+    book.coverURL =
       `https://images-na.ssl-images-amazon.com/images/P/` +
       book["isbn-10"] +
       `.01.LZZ.jpg`;
@@ -123,7 +123,7 @@ function ISBNfromEAN(EAN) {
 function BookTemplate({
   "isbn-13": isbn13,
   authors,
-  coverurl,
+  coverURL,
   description,
   format,
   notes,
@@ -135,7 +135,7 @@ function BookTemplate({
   volume,
   year,
 }) {
-  return `${coverurl ? `<img src="${coverurl}"/>` : ""}
+  return `${coverURL ? `<img src="${coverURL}"/>` : ""}
   <h1 ${onLoan ? "class='onLoan' " : ""}>${title}</h1>
   <h2>${authors}</h2>
   <span>${isbn13}</span><br/>