diff --git a/app/controllers/form_controller.rb b/app/controllers/form_controller.rb
index 9fb0fe243..2f6ce6483 100644
--- a/app/controllers/form_controller.rb
+++ b/app/controllers/form_controller.rb
@@ -103,7 +103,7 @@ private
       end
 
       if question.id == "owning_organisation_id"
-        owning_organisation = Organisation.find(result["owning_organisation_id"])
+        owning_organisation = result["owning_organisation_id"].present? ? Organisation.find(result["owning_organisation_id"]) : nil
         if current_user.support? && @log.managing_organisation.blank? && owning_organisation&.managing_agents&.empty?
           result["managing_organisation_id"] = owning_organisation.id
         elsif owning_organisation&.absorbing_organisation == current_user.organisation