diff --git a/app/controllers/organisation_relationships_controller.rb b/app/controllers/organisation_relationships_controller.rb
index 7eaf31b72..d622fd17b 100644
--- a/app/controllers/organisation_relationships_controller.rb
+++ b/app/controllers/organisation_relationships_controller.rb
@@ -61,7 +61,7 @@ class OrganisationRelationshipsController < ApplicationController
     redirect_to housing_providers_organisation_path(related_organisation_id:)
   end
 
-  def create(child_organisation_id:, parent_organisation_id:, relationship_type:)
+  def create!(child_organisation_id:, parent_organisation_id:, relationship_type:)
     @resource = OrganisationRelationship.new(child_organisation_id:, parent_organisation_id:, relationship_type:)
     @resource.save!
   end