diff --git a/activesupport/test/core_ext/time_with_zone_test.rb b/activesupport/test/core_ext/time_with_zone_test.rb
index 03ae70d420..bb60968a4f 100644
--- a/activesupport/test/core_ext/time_with_zone_test.rb
+++ b/activesupport/test/core_ext/time_with_zone_test.rb
@@ -1,5 +1,5 @@
 require 'abstract_unit'
-require 'active_support/time_with_zone'
+require 'active_support/time'
 require 'active_support/json'
 
 class TimeWithZoneTest < Test::Unit::TestCase