diff --git a/docs/content/b2.md b/docs/content/b2.md
index 53aa791c2..d5a772403 100644
--- a/docs/content/b2.md
+++ b/docs/content/b2.md
@@ -177,6 +177,11 @@ the file instead of hiding it.
 Old versions of files, where available, are visible using the 
 `--b2-versions` flag.
 
+**NB** Note that `--b2-versions` does not work with crypt at the
+moment [#1627](https://github.com/ncw/rclone/issues/1627). Using
+[--backup-dir](/docs/#backup-dir-dir) with rclone is the recommended
+way of working around this.
+
 If you wish to remove all the old versions then you can use the
 `rclone cleanup remote:bucket` command which will delete all the old
 versions of files, leaving the current ones intact.  You can also