diff --git a/wiki/linux/dm-crypt.md b/wiki/linux/dm-crypt.md
index fa9e665..ac74631 100644
--- a/wiki/linux/dm-crypt.md
+++ b/wiki/linux/dm-crypt.md
@@ -8,11 +8,12 @@ To create a encrypted device simply run:
 `cryptsetup -y -v luksFormat /dev/sda2`.
 Where `/dev/sda2` is the device you want to create.
 
-## Open an encrypted device
+## Open/Close an encrypted device
 
-To open and map a device run `cryptsetup -y -v luksFormat /dev/sda1 crypt0` where
+To open and map a device run `cryptsetup luksOpen /dev/sda1 crypt0` where
 `/dev/sda1` is your encrypted device and `crypt0` is where it will be mapped to
 with `dev/mapper/crypt0`.
+Afterwards it can be closed by running `cryptsetup close /dev/mapper/crypt0`.
 
 ## Resize a LUKS encrypted volume