diff --git a/horizon/server/cluster.yml b/horizon/server/cluster.yml
index 1d1f5eb..0cd20d7 100644
--- a/horizon/server/cluster.yml
+++ b/horizon/server/cluster.yml
@@ -16,6 +16,7 @@
       plugin: {}
       session:
         engine: "cache"
+      images_upload_mode: ${_param:horizon_images_upload_mode}
   apache:
     server:
       modules: