diff --git a/test/functional/messages_controller_test.rb b/test/functional/messages_controller_test.rb
index ba28e538e..f5a40a1d7 100644
--- a/test/functional/messages_controller_test.rb
+++ b/test/functional/messages_controller_test.rb
@@ -146,10 +146,11 @@ class MessagesControllerTest < Redmine::ControllerTest
       assert_mail_body_match 'Message body', mail
     end
 
+    bcc_email_addresses = mails.map(&:bcc).flatten
     # author
-    assert_equal ['jsmith@somenet.foo'], mails[0].bcc
+    assert_includes bcc_email_addresses, 'jsmith@somenet.foo'
     # project member
-    assert_equal ['dlopper@somenet.foo'], mails[1].bcc
+    assert_includes bcc_email_addresses, 'dlopper@somenet.foo'
   end
 
   def test_get_edit