1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb
index 83b5a5e698..e4b8b1a330 100644
--- a/activerecord/lib/active_record/attribute_methods.rb
+++ b/activerecord/lib/active_record/attribute_methods.rb
@@ -26,7 +26,7 @@ module ActiveRecord
       def self.set_name_cache(name, value)
         const_name = "ATTR_#{name}"
         unless const_defined? const_name
-          const_set const_name, value.dup.freeze
+          const_set const_name, -value
         end
       end
     }