diff --git a/app/controllers/concerns/laboratory_helper.rb b/app/controllers/concerns/laboratory_helper.rb
index e03273d68..e2989219b 100644
--- a/app/controllers/concerns/laboratory_helper.rb
+++ b/app/controllers/concerns/laboratory_helper.rb
@@ -6,7 +6,6 @@ module LaboratoryHelper
 
     helper_method :current_laboratory
     helper_method :default_setting
-    helper_method :default_yun_session
   end
 
   def current_laboratory