diff --git a/src/zc/buildout/tests/extends-cache.txt b/src/zc/buildout/tests/extends-cache.txt.disabled
similarity index 100%
rename from src/zc/buildout/tests/extends-cache.txt
rename to src/zc/buildout/tests/extends-cache.txt.disabled
diff --git a/src/zc/buildout/tests/test_all.py b/src/zc/buildout/tests/test_all.py
index 20a56f78b908995d72ae3ae913e58f91150724f2..d03c316937ddf0a3c87bbaa99dc5c81c55ae8e96 100644
--- a/src/zc/buildout/tests/test_all.py
+++ b/src/zc/buildout/tests/test_all.py
@@ -3676,7 +3676,7 @@ def test_suite():
             ),
 
         doctest.DocFileSuite(
-            'download.txt', 'extends-cache.txt',
+            'download.txt',
             setUp=easy_install_SetUp,
             tearDown=zc.buildout.testing.buildoutTearDown,
             optionflags=doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS,