diff --git a/app/models/solidus_paypal_braintree/gateway.rb b/app/models/solidus_paypal_braintree/gateway.rb
index 040fd320..8901816d 100644
--- a/app/models/solidus_paypal_braintree/gateway.rb
+++ b/app/models/solidus_paypal_braintree/gateway.rb
@@ -4,8 +4,7 @@ module SolidusPaypalBraintree
   class Gateway < ::Spree::PaymentMethod
     include RequestProtection
 
-    class Error < StandardError; end
-    class TokenGenerationDisabledError < Error; end
+    class TokenGenerationDisabledError < StandardError; end
 
     # Error message from Braintree that gets returned by a non voidable transaction
     NON_VOIDABLE_STATUS_ERROR_REGEXP = /can only be voided if status is authorized/