diff --git a/encrypt-swap-Ubuntu-20.04.md b/encrypt-swap-Ubuntu-20.04.md
index 9dc501d..c94b149 100644
--- a/encrypt-swap-Ubuntu-20.04.md
+++ b/encrypt-swap-Ubuntu-20.04.md
@@ -84,7 +84,7 @@ mkswap /dev/nvme0n1p2
 swapon -a
 ~~~
 
-### to be solve
+## to be solve
 
 ~~~
 cryptsetup: ERROR: Couln't resolve device rpool/ROOT/ubuntu_...