diff --git a/actioncable/test/subscription_adapter/postgresql_test.rb b/actioncable/test/subscription_adapter/postgresql_test.rb
index ada4c2e2bd..29c746733d 100644
--- a/actioncable/test/subscription_adapter/postgresql_test.rb
+++ b/actioncable/test/subscription_adapter/postgresql_test.rb
@@ -12,7 +12,7 @@ class PostgresqlAdapterTest < ActionCable::TestCase
     if Dir.exist?(ar_tests)
       require File.join(ar_tests, "config")
       require File.join(ar_tests, "support/config")
-      local_config = ARTest.config["arunit"]
+      local_config = ARTest.config["connections"]["postgresql"]["arunit"]
       database_config.update local_config if local_config
     end