1 files changed, 3 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb
index d83c5a84b4..2c8ae9c774 100644
--- a/activerecord/lib/active_record/attribute_methods/read.rb
+++ b/activerecord/lib/active_record/attribute_methods/read.rb
@@ -49,11 +49,12 @@ module ActiveRecord
         # key the @attributes_cache in read_attribute.
         def define_method_attribute(name)
           safe_name = name.unpack('h*').first
-          generated_attribute_methods::AttrNames.set_name_cache safe_name, name
+          ActiveRecord::AttributeMethods::AttrNames.set_name_cache safe_name, name
 
           generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1
             def __temp__#{safe_name}
-              read_attribute(AttrNames::ATTR_#{safe_name}) { |n| missing_attribute(n, caller) }
+              name = ::ActiveRecord::AttributeMethods::AttrNames::ATTR_#{safe_name}
+              read_attribute(name) { |n| missing_attribute(n, caller) }
             end
             alias_method #{name.inspect}, :__temp__#{safe_name}
             undef_method :__temp__#{safe_name}