diff --git a/README.md b/README.md
index 3ff9e0c3..d82e718c 100644
--- a/README.md
+++ b/README.md
@@ -97,6 +97,7 @@ summary: it works! you can use it! (but technically not even close to beta)
 * Windows: python 3.7 and older cannot read tags with ffprobe, so use mutagen or upgrade
 * Windows: python 2.7 cannot index non-ascii filenames with `-e2d`
 * Windows: python 2.7 cannot handle filenames with mojibake
+* hiding the contents at url `/d1/d2/d3` using `-v :d1/d2/d3:cd2d` has the side-effect of creating databases (for files/tags) inside folders d1 and d2, and those databases take precedence over the main db at the top of the vfs - this means all files in d2 and below will be reindexed unless you already had a vfs entry at or below d2
 * probably more, pls let me know
 
 
diff --git a/tests/test_vfs.py b/tests/test_vfs.py
index 758fe12d..c7730828 100644
--- a/tests/test_vfs.py
+++ b/tests/test_vfs.py
@@ -18,7 +18,9 @@ from copyparty import util
 
 class Cfg(Namespace):
     def __init__(self, a=[], v=[], c=None):
-        ex = {k: False for k in "e2d e2ds e2dsa e2t e2ts e2tsr mte".split()}
+        ex = {k: False for k in "e2d e2ds e2dsa e2t e2ts e2tsr".split()}
+        ex["mtp"] = []
+        ex["mte"] = "a"
         super(Cfg, self).__init__(a=a, v=v, c=c, **ex)