diff --git a/src/MangaDex/MangaDexParser.ts b/src/MangaDex/MangaDexParser.ts
index c7a075b..c9b5eef 100644
--- a/src/MangaDex/MangaDexParser.ts
+++ b/src/MangaDex/MangaDexParser.ts
@@ -73,6 +73,7 @@ export const addFileNamesToManga = async (manga: PartialSourceManga[], covers: C
 
         const coverItem = covers.find((x) => x.relationships.find((r) => r.type == 'manga')?.id == mangaId)
         if (coverItem === undefined) {
+            throw new Error('Failed to find cover image: ' + covers)
             continue
         }