diff --git a/lib/tasks/thumbnail.rake b/lib/tasks/thumbnail.rake
index 7f7a393b1117441b0ddcd5f0a419a0cf1c241295..186c6011abd03a12c2dc33978667874b9a9f9b5e 100644
--- a/lib/tasks/thumbnail.rake
+++ b/lib/tasks/thumbnail.rake
@@ -15,7 +15,7 @@ namespace :thumbnail do
 
       begin
         # Get items from dspace (from offset to offset+limit)
-        items = learning_object_repository.all_from_offset_to_limit(limit,offset)
+        items = learning_object_repository.all_from_offset_to_limit(offset,limit)
       rescue
         # Sleeps for a while to wait database's recovery
         sleep(30.seconds)
@@ -29,7 +29,8 @@ namespace :thumbnail do
         offset = offset + limit
 
         items.each do |item|
-          ThumbnailGeneratorWorker.perform_async(item.id)
+          puts item.name
+          # ThumbnailGeneratorWorker.perform_async(item.id)
         end
 
       end