diff --git a/lib/decentralised_book_index/sync/sync_tasks/sync_books_task.ex b/lib/decentralised_book_index/sync/sync_tasks/sync_books_task.ex
index bbb7f1b..096e1a8 100644
--- a/lib/decentralised_book_index/sync/sync_tasks/sync_books_task.ex
+++ b/lib/decentralised_book_index/sync/sync_tasks/sync_books_task.ex
@@ -46,7 +46,7 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncBooksTask do
   end
 
   defp get_author_roles_url(json) do
-    url = get_in(json, ["relationships", "author_roles", "links", "related"])
+    get_in(json, ["relationships", "author_roles", "links", "related"])
   end
 
   defp get_author_roles(json) do
@@ -64,7 +64,7 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncBooksTask do
   end
 
   defp get_bids_url(json) do
-    url = get_in(json, ["relationships", "bids", "links", "related"])
+    get_in(json, ["relationships", "bids", "links", "related"])
   end
 
   defp get_bids(json) do