diff --git a/encrypt-swap-Ubuntu-20.04.md b/encrypt-swap-Ubuntu-20.04.md
index 2997731..b31442b 100644
--- a/encrypt-swap-Ubuntu-20.04.md
+++ b/encrypt-swap-Ubuntu-20.04.md
@@ -5,7 +5,7 @@
 * all command bellow are run has root
 * install ecryptfs
 
-~~~{.shell}
+~~~{.bash}
 install apt-get install ecryptfs-utils
 ~~~