diff --git a/app/controllers/catalog_controller.rb b/app/controllers/catalog_controller.rb
index 324e40d84599637abcc7c116e7b6767cb8d7930f..2d8f5150458ad9e877bd6f069e7cf7ba6d0a7cf6 100644
--- a/app/controllers/catalog_controller.rb
+++ b/app/controllers/catalog_controller.rb
@@ -86,8 +86,8 @@ class CatalogController < ApplicationController
       named_entities[:HumanProd] = named_entities[:HumanProd].merge(doc_named_entities[:HumanProd]) do |key, oldval, newval|
         oldval.concat newval
       end
-      doc_named_entities_labels = helpers.get_linked_entities(doc_named_entities.map { |k, v| v.keys }.flatten.uniq)
-      linked_entities.merge(doc_named_entities_labels)
+      doc_named_entities_labels = helpers.get_linked_entities doc_named_entities.map { |k, v| v.keys }.flatten.uniq
+      linked_entities.merge!(doc_named_entities_labels)
     end
     render partial: "named_entities/named_entities", locals: { named_entities: named_entities, linked_entities: linked_entities }
   end