diff --git a/travis-5.x.cfg b/travis-5.x.cfg
index 583cb32..04d08d7 100644
--- a/travis-5.x.cfg
+++ b/travis-5.x.cfg
@@ -1,7 +1,11 @@
-[buildout]
-extends = test-5.x.cfg buildout-cache.cfg
-parts = download install test
-plone-series = 5.1
-package-name =
-package-extras =
-test-eggs =
+This file is DEPRECATED and must not be used anymore.
+Please see README.rst for current instructions on how to use buildout.plonetest.
+
+Note: the other travis-*.cfg files will be kept for now.
+So if you really want, you can switch to travis-5.1.x if you only want to test Plone 5.1.
+But these travis files will not work for Plone 5.2.
+
+For information about the change, see this issue:
+https://github.com/collective/buildout.plonetest/issues/10
+And see this PR:
+https://github.com/collective/buildout.plonetest/pull/52