diff --git a/config/initializers/stripe.rb b/config/initializers/stripe.rb
index 56cf923fd6..37871eb00a 100644
--- a/config/initializers/stripe.rb
+++ b/config/initializers/stripe.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Add some additional properties, to allow us to access these
 # properties from the object, rather than calling from ENV directly.
 # This is mostly useful for stubbing when testing, but also feels
@@ -11,9 +13,13 @@ module Stripe
 end
 
 Rails.application.reloader.to_prepare do
-  Stripe.api_key = ENV['STRIPE_INSTANCE_SECRET_KEY']
-  Stripe.api_key = ENV['STRIPE_SECRET_TEST_API_KEY'] if Rails.env.test? || ENV["CI"]
-  Stripe.publishable_key = ENV['STRIPE_INSTANCE_PUBLISHABLE_KEY']
-  Stripe.client_id = ENV['STRIPE_CLIENT_ID']
-  Stripe.endpoint_secret = ENV['STRIPE_ENDPOINT_SECRET']
-end
\ No newline at end of file
+  Stripe.api_key = if Rails.env.test? || ENV["CI"]
+                     ENV.fetch('STRIPE_SECRET_TEST_API_KEY', nil)
+                   else
+                     ENV.fetch('STRIPE_INSTANCE_SECRET_KEY', nil)
+                   end
+
+  Stripe.publishable_key = ENV.fetch('STRIPE_INSTANCE_PUBLISHABLE_KEY', nil)
+  Stripe.client_id = ENV.fetch('STRIPE_CLIENT_ID', nil)
+  Stripe.endpoint_secret = ENV.fetch('STRIPE_ENDPOINT_SECRET', nil)
+end