2 files changed, 2 insertions, 9 deletions
diff --git a/railties/test/application/middleware/sendfile_test.rb b/railties/test/application/middleware/sendfile_test.rb
index c7a1c573f9..d2ad2668bb 100644
--- a/railties/test/application/middleware/sendfile_test.rb
+++ b/railties/test/application/middleware/sendfile_test.rb
@@ -27,11 +27,12 @@ module ApplicationTests
     end
 
     # x_sendfile_header middleware
-    test "config.action_dispatch.x_sendfile_header defaults to ''" do
+    test "config.action_dispatch.x_sendfile_header defaults to nil" do
       make_basic_app
       simple_controller
 
       get "/"
+      assert !last_response.headers["X-Sendfile"]
       assert_equal File.read(__FILE__), last_response.body
     end
 
diff --git a/railties/test/application/middleware_test.rb b/railties/test/application/middleware_test.rb
index bed5ba503f..6a0a272073 100644
--- a/railties/test/application/middleware_test.rb
+++ b/railties/test/application/middleware_test.rb
@@ -20,8 +20,6 @@ module ApplicationTests
     end
 
     test "default middleware stack" do
-      add_to_config "config.action_dispatch.x_sendfile_header = 'X-Sendfile'"
-
       boot!
 
       assert_equal [
@@ -49,12 +47,6 @@ module ApplicationTests
       ], middleware
     end
 
-    test "Rack::Sendfile is not included by default" do
-      boot!
-
-      assert !middleware.include?("Rack::Sendfile"), "Rack::Sendfile is not included in the default stack unless you set config.action_dispatch.x_sendfile_header"
-    end
-
     test "Rack::Cache is present when action_controller.perform_caching is set" do
       add_to_config "config.action_controller.perform_caching = true"