2 files changed, 4 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/timestamp.rb b/activerecord/lib/active_record/timestamp.rb
index 2ecbd906bd..5617adea1f 100644
--- a/activerecord/lib/active_record/timestamp.rb
+++ b/activerecord/lib/active_record/timestamp.rb
@@ -67,7 +67,7 @@ module ActiveRecord
     end
 
     def timestamp_attributes_for_update_in_model
-      timestamp_attributes_for_update.select { |c| respond_to?(c) }
+      timestamp_attributes_for_update.select { |c| self.class.column_names.include?(c.to_s) }
     end
 
     def timestamp_attributes_for_update #:nodoc:
diff --git a/activerecord/test/models/task.rb b/activerecord/test/models/task.rb
index ee0282c79b..e36989dd56 100644
--- a/activerecord/test/models/task.rb
+++ b/activerecord/test/models/task.rb
@@ -1,3 +1,5 @@
 class Task < ActiveRecord::Base
-
+  def updated_at
+    ending
+  end
 end