diff --git a/client/mixins/uploadHelpers.js b/client/mixins/uploadHelpers.js
index 4223872f..caa06edc 100644
--- a/client/mixins/uploadHelpers.js
+++ b/client/mixins/uploadHelpers.js
@@ -175,7 +175,6 @@ export default {
       }).map(ab => this.cleanBook(ab, index++))
       return {
         books,
-        invalidBooks,
         ignoredFiles
       }
     },