diff --git a/activesupport/test/concern_test.rb b/activesupport/test/concern_test.rb
index 8e2c298fc6a28e46e7dc6ab79a4577c828ae6734..9b0a2ff7c9b4fc9ab58431b18bd05e7efc1eecd4 100644
--- a/activesupport/test/concern_test.rb
+++ b/activesupport/test/concern_test.rb
@@ -68,12 +68,6 @@ def test_class_methods_are_extended
     assert_equal ConcernTest::Baz::ClassMethods, (class << @klass; self.included_modules; end)[0]
   end
 
-  def test_instance_methods_are_included
-    @klass.send(:include, Baz)
-    assert_equal "baz", @klass.new.baz
-    assert @klass.included_modules.include?(ConcernTest::Baz)
-  end
-
   def test_included_block_is_ran
     @klass.send(:include, Baz)
     assert_equal true, @klass.included_ran