diff --git a/encrypt-swap-Ubuntu-20.04.md b/encrypt-swap-Ubuntu-20.04.md
index 4db7974..e0993bd 100644
--- a/encrypt-swap-Ubuntu-20.04.md
+++ b/encrypt-swap-Ubuntu-20.04.md
@@ -5,8 +5,8 @@
 * all command bellow are run has root
 * install ecryptfs
 
-~~~{sh}
-$ install apt-get install ecryptfs-utils
+~~~{zsh}
+install apt-get install ecryptfs-utils
 ~~~
 
 ## encrypt swap