diff --git a/app/views/competitions/competitions/common_header.json.jbuilder b/app/views/competitions/competitions/common_header.json.jbuilder
index aed776c7f..c5732a51d 100644
--- a/app/views/competitions/competitions/common_header.json.jbuilder
+++ b/app/views/competitions/competitions/common_header.json.jbuilder
@@ -11,7 +11,7 @@ json.published @competition.published?
 json.nearly_published @competition.published_at.present?
 
 json.competition_modules @competition_modules do |com_module|
-  json.(com_module, :name, :position, :module_type)
+  json.(com_module, :id, :name, :position, :module_type)
   json.module_url com_module.module_url
 end