diff --git a/bash/mount.sh b/bash/mount.sh
index 65131f1..e92ecef 100644
--- a/bash/mount.sh
+++ b/bash/mount.sh
@@ -57,11 +57,11 @@ done
 
 
 function mm {
-mount --bind '/deb' 'overlay/mount/deb'
+mount --make-rslave --rbind '/deb' 'overlay/mount/deb'
 }
 
 function um {
-umount 'overlay/mount/deb'
+umount --recursive 'overlay/mount/deb'
 }