diff --git a/lib/stripe/util.ex b/lib/stripe/util.ex
index 2dd763b8..8343bb1b 100644
--- a/lib/stripe/util.ex
+++ b/lib/stripe/util.ex
@@ -80,7 +80,7 @@ defmodule Stripe.Util do
   def object_name_to_module("terminal.connection_token"), do: Stripe.Terminal.ConnectionToken
   def object_name_to_module("terminal.location"), do: Stripe.Terminal.Location
   def object_name_to_module("terminal.reader"), do: Stripe.Terminal.Reader
-  def object_name_to_module("test_helpers.test_clock"), do: Stripe.TestClock
+  def object_name_to_module("test_helpers.test_clock"), do: Stripe.TestHelpers.TestClock
 
   def object_name_to_module("usage_record_summary"),
     do: Stripe.UsageRecordSummary