diff --git a/app/controllers/concerns/laboratory_helper.rb b/app/controllers/concerns/laboratory_helper.rb
index 37a3675f0..8302e4c6a 100644
--- a/app/controllers/concerns/laboratory_helper.rb
+++ b/app/controllers/concerns/laboratory_helper.rb
@@ -26,6 +26,6 @@ module LaboratoryHelper
   end
 
   def default_yun_session
-    @_default_yun_session = "#{request.subdomain.split('.').first}_user_id"
+    @_default_yun_session = "#{current_laboratory.split('.').first}_user_id"
   end
 end
\ No newline at end of file