--- a/tests/test-largefiles-small-disk.t	Wed Oct 12 12:22:18 2016 +0200
+++ b/tests/test-largefiles-small-disk.t	Fri Oct 14 01:53:15 2016 +0200
@@ -11,7 +11,7 @@
   > shutil.copyfileobj = copyfileobj
   > #
   > # this makes the rewritten code abort:
-  > def filechunkiter(f, size=65536, limit=None):
+  > def filechunkiter(f, size=131072, limit=None):
   >     yield f.read(4)
   >     raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))
   > util.filechunkiter = filechunkiter