diff --git a/app/controllers/catalog_controller.rb b/app/controllers/catalog_controller.rb
index d3e59282..92d99218 100644
--- a/app/controllers/catalog_controller.rb
+++ b/app/controllers/catalog_controller.rb
@@ -17,7 +17,7 @@ def search_across_settings
   end
 
   def unique_custom_fields
-    Spotlight::CustomField.select(:field, :configuration).distinct
+    Spotlight::CustomField.select(:field, :configuration).distinct.uniq(&:field)
   end
 
   configure_blacklight do |config|