1 files changed, 0 insertions, 4 deletions
diff --git a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
index 3fd2fb5f67..9ae452e7a1 100644
--- a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
+++ b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
@@ -19,10 +19,6 @@ module ActiveRecord
           owner[reflection.foreign_type] = record ? record.class.polymorphic_name : nil
         end
 
-        def different_target?(record)
-          super || record.class != klass
-        end
-
         def inverse_reflection_for(record)
           reflection.polymorphic_inverse_of(record.class)
         end