diff --git a/lib/transaction.rb b/lib/transaction.rb
index be5661f403f79603544b2cbba23cbf9fa3929d9e..3080b5f397e32f2b44605eb02c40ee82423ae88f 100644
--- a/lib/transaction.rb
+++ b/lib/transaction.rb
@@ -34,7 +34,7 @@ class Transaction
 			if payment_method
 				{ payment_method_token: payment_method.token }
 			else
-				{ customer_id: customer.id }
+				{ customer_id: customer.customer_id }
 			end
 		)
 	end