diff --git a/actionmailer/test/base_test.rb b/actionmailer/test/base_test.rb
index 6a7931da8c2688af3c988f67c977aacb3eddc661..1b793d255e5350b50a84cd67dd1135b7cce10df3 100644
--- a/actionmailer/test/base_test.rb
+++ b/actionmailer/test/base_test.rb
@@ -153,8 +153,8 @@ def teardown
     assert_equal(2, email.parts.length)
     assert_equal("multipart/related", email.mime_type)
     assert_equal("multipart/alternative", email.parts[0].mime_type)
-    assert_equal("text/plain", email.parts[0].parts[0].mime_type)
-    assert_equal("text/html",  email.parts[0].parts[1].mime_type)
+      assert_equal("text/plain", email.parts[0].parts[0].mime_type)
+      assert_equal("text/html",  email.parts[0].parts[1].mime_type)
     assert_equal("logo.png", email.parts[1].filename)
   end