1 files changed, 0 insertions, 4 deletions
diff --git a/activerecord/lib/active_record/associations/preloader/has_one.rb b/activerecord/lib/active_record/associations/preloader/has_one.rb
index d87abf630f..e58fa351b0 100644
--- a/activerecord/lib/active_record/associations/preloader/has_one.rb
+++ b/activerecord/lib/active_record/associations/preloader/has_one.rb
@@ -7,10 +7,6 @@ module ActiveRecord
         def association_key_name
           reflection.foreign_key
         end
-
-        def owner_key_name
-          reflection.active_record_primary_key
-        end
       end
     end
   end