diff --git a/app/views/crops/_thumbnail.html.haml b/app/views/crops/_thumbnail.html.haml
index 770f1bfc7..32cbbce9a 100644
--- a/app/views/crops/_thumbnail.html.haml
+++ b/app/views/crops/_thumbnail.html.haml
@@ -1,7 +1,7 @@
 .thumbnail
   .crop-thumbnail
     - if crop
-      - cache cache_key_for(crop) do
+      - cache cache_key_for(Crop, crop.id) do
         = link_to image_tag((crop.default_photo ?  crop.default_photo.thumbnail_url : 'placeholder_150.png'), :alt => crop.name, :class => 'img'), crop
         .cropinfo
           .cropname