diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb
index 413bd147de142b713df652bb2a2c1fece0eb2d14..7f1d62af39536196daed7292386503ebf25ca622 100644
--- a/activerecord/lib/active_record/fixtures.rb
+++ b/activerecord/lib/active_record/fixtures.rb
@@ -657,6 +657,7 @@ def yaml_file_path
   #--
   # Deprecate 'Fixtures' in favor of 'FixtureSet'.
   #++
+  # :nodoc:
   Fixtures = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('ActiveRecord::Fixtures', 'ActiveRecord::FixtureSet')
 
   class Fixture #:nodoc: