diff --git a/app/graphql/types/doi_item.rb b/app/graphql/types/doi_item.rb
index 468a63a4b..6e2fdf89e 100644
--- a/app/graphql/types/doi_item.rb
+++ b/app/graphql/types/doi_item.rb
@@ -920,7 +920,7 @@ def citeproc_hsh
       "volume" => object.container.to_h["volume"],
       "issue" => object.container.to_h["issue"],
       "page" => page,
-      "publisher" => object.publisher["name"] || object.publisher,
+      "publisher" => (object.publisher.is_a?(Hash) ? object.publisher&.fetch("name", nil) : object.publisher),
       "title" => parse_attributes(object.titles, content: "title", first: true),
       "URL" => object.url,
       "version" => object.version_info,