diff --git a/plugin.rb b/plugin.rb
index 6949c89..3c93d49 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true.
+
 # name: Discourse Patrons
 # about: Integrates Stripe into Discourse to allow visitors to make payments
 # version: 1.0.0
diff --git a/spec/controllers/discourse_patrons/patrons_controller_spec.rb b/spec/controllers/discourse_patrons/patrons_controller_spec.rb
index ec182ee..9c62ec3 100644
--- a/spec/controllers/discourse_patrons/patrons_controller_spec.rb
+++ b/spec/controllers/discourse_patrons/patrons_controller_spec.rb
@@ -15,7 +15,7 @@ module DiscoursePatrons
 
     describe 'create' do
       it 'responds ok' do
-        post :create, params: { }, format: :json
+        post :create, params: {}, format: :json
         expect(response).to have_http_status(200)
       end
     end