X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/380a54a7d97b34119cbaa3bee05d6b6cd241eee5..9f6bfd78b88486d4b3384b4be05c1f5e4f546a9c:/services/api/app/models/collection.rb

diff --git a/services/api/app/models/collection.rb b/services/api/app/models/collection.rb
index ac00e5d39c..292cf34ccb 100644
--- a/services/api/app/models/collection.rb
+++ b/services/api/app/models/collection.rb
@@ -521,7 +521,7 @@ class Collection < ArvadosModel
       joins("JOIN collections ON links.head_uuid = collections.uuid").
       order("links.created_at DESC")
 
-    docker_image_formats = Rails.configuration.Containers.SupportedDockerImageFormats
+    docker_image_formats = Rails.configuration.Containers.SupportedDockerImageFormats.keys.map(&:to_s)
 
     if (docker_image_formats.include? 'v1' and
         docker_image_formats.include? 'v2') or filter_compatible_format == false