diff --git a/app/workers/thumbnail_generator_worker.rb b/app/workers/thumbnail_generator_worker.rb
index c789dcfbf6ce35e495cb8ad6bce2345e6df68ab1..c2fe6926f011ea65ab448c3c58473268529fe73c 100644
--- a/app/workers/thumbnail_generator_worker.rb
+++ b/app/workers/thumbnail_generator_worker.rb
@@ -9,7 +9,7 @@ class ThumbnailGeneratorWorker
     create_dir("#{root_dir}#{thumbnails_dir}")
 
     default_size = "600x600"
-    default_thumbnail = "/#{thumbnails_dir}/default_thumbnail.jpg"
+    default_thumbnail = "#{thumbnails_dir}/default_thumbnail.jpg"
 
     item = item_database_repository.find(learning_object_id)
     retrieve_link = item.get_bitstream_retrievelink_of "ORIGINAL"