diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 20d9e7a9cab84adfbea8e758be31714274766e6b..df795df52e426192ab33e9a509ede346b7562dc1 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -356,6 +356,8 @@ def init_from_db(attributes)
       @new_record = false
       @attributes = attributes
 
+      self.class.define_attribute_methods
+
       yield self if block_given?
 
       _run_find_callbacks