diff --git a/Lib/test/test_zipfile64.py b/Lib/test/test_zipfile64.py
index de61ced..449cf39 100644
--- a/Lib/test/test_zipfile64.py
+++ b/Lib/test/test_zipfile64.py
@@ -2,8 +2,11 @@
 # The test_support.requires call is the only reason for keeping this separate
 # from test_zipfile
 from test import test_support
+# XXX(nnorwitz): disable this test by looking for extra largfile resource
+# which doesn't exist.  This test takes over 30 minutes to run in general
+# and requires more disk space than most of the buildbots.
 test_support.requires(
-        'largefile',
+        'extralargefile',
         'test requires loads of disk-space bytes and a long time to run'
     )