1 files changed, 3 insertions, 4 deletions
diff --git a/activemodel/test/cases/validations/callbacks_test.rb b/activemodel/test/cases/validations/callbacks_test.rb
index 1cf09758f9..e4f602bd80 100644
--- a/activemodel/test/cases/validations/callbacks_test.rb
+++ b/activemodel/test/cases/validations/callbacks_test.rb
@@ -5,11 +5,10 @@ class Dog
   include ActiveModel::Validations
   include ActiveModel::Validations::Callbacks
 
-  attr_accessor :name
-  attr_writer   :history
+  attr_accessor :name, :history
 
-  def history
-    @history ||= []
+  def initialize
+    @history = []
   end
 end