diff --git a/activesupport/lib/active_support/core_ext/time/calculations.rb b/activesupport/lib/active_support/core_ext/time/calculations.rb
index 0a71fc117c..d0f574f2ba 100644
--- a/activesupport/lib/active_support/core_ext/time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/time/calculations.rb
@@ -1,6 +1,7 @@
 require 'active_support/duration'
 require 'active_support/core_ext/time/conversions'
 require 'active_support/time_with_zone'
+require 'active_support/core_ext/time/zones'
 
 class Time
   COMMON_YEAR_DAYS_IN_MONTH = [nil, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
diff --git a/activesupport/lib/active_support/core_ext/time/zones.rb b/activesupport/lib/active_support/core_ext/time/zones.rb
index e48866abe3..5f2fec3782 100644
--- a/activesupport/lib/active_support/core_ext/time/zones.rb
+++ b/activesupport/lib/active_support/core_ext/time/zones.rb
@@ -1,4 +1,3 @@
-require 'active_support/core_ext/time/calculations'
 require 'active_support/time_with_zone'
 
 class Time