diff --git a/activesupport/lib/active_support/core_ext/time/marshal.rb b/activesupport/lib/active_support/core_ext/time/marshal.rb
index 457d3f5b62a..1bf622d6a68 100644
--- a/activesupport/lib/active_support/core_ext/time/marshal.rb
+++ b/activesupport/lib/active_support/core_ext/time/marshal.rb
@@ -1,30 +1,3 @@
-# Pre-1.9 versions of Ruby have a bug with marshaling Time instances, where utc instances are
-# unmarshalled in the local zone, instead of utc. We're layering behavior on the _dump and _load
-# methods so that utc instances can be flagged on dump, and coerced back to utc on load.
-if !Marshal.load(Marshal.dump(Time.now.utc)).utc?
-  class Time
-    class << self
-      alias_method :_load_without_utc_flag, :_load
-      def _load(marshaled_time)
-        time = _load_without_utc_flag(marshaled_time)
-        time.instance_eval do
-          if defined?(@marshal_with_utc_coercion)
-            val = remove_instance_variable("@marshal_with_utc_coercion")
-          end
-          val ? utc : self
-        end
-      end
-    end
-
-    alias_method :_dump_without_utc_flag, :_dump
-    def _dump(*args)
-      obj = dup
-      obj.instance_variable_set('@marshal_with_utc_coercion', utc?)
-      obj._dump_without_utc_flag(*args)
-    end
-  end
-end
-
 # Ruby 1.9.2 adds utc_offset and zone to Time, but marshaling only
 # preserves utc_offset. Preserve zone also, even though it may not
 # work in some edge cases.