Index: app/helpers/projects_helper.rb
===================================================================
--- app/helpers/projects_helper.rb	(revision 22249)
+++ app/helpers/projects_helper.rb	(working copy)
@@ -167,7 +167,7 @@
     end if include_in_api_response?('enabled_modules')
 
     api.array :issue_custom_fields do
-      project.issue_custom_fields.each do |custom_field|
+      project.all_issue_custom_fields.each do |custom_field|
         api.custom_field(:id => custom_field.id, :name => custom_field.name)
       end
     end if include_in_api_response?('issue_custom_fields')