diff --git a/config.ru b/config.ru
index feba6051ee8034a511ae8d76f5043125f8327759..968f065df08ccc9a6bdcfc7e70abc65c7388a86f 100644
--- a/config.ru
+++ b/config.ru
@@ -99,7 +99,10 @@ class CreditCardGateway
 	end
 
 	def merchant_account
-		BRAINTREE_CONFIG[:merchant_accounts][customer_plan[:currency]]
+		plan = customer_plan
+		return unless plan
+
+		BRAINTREE_CONFIG[:merchant_accounts][plan[:currency]]
 	end
 
 	def client_token