diff --git a/Create-DevTerm-A04-OS-image-from-scratch.md b/Create-DevTerm-A04-OS-image-from-scratch.md
index 9bc5d98..37de8bf 100644
--- a/Create-DevTerm-A04-OS-image-from-scratch.md
+++ b/Create-DevTerm-A04-OS-image-from-scratch.md
@@ -184,7 +184,7 @@ Terminal=false
 NoDisplay=true
 EOF'
 ```
-## gdm3 background and hide poweroff,suspend
+### gdm3 background and hide poweroff,suspend
 In `/etc/gdm3/greeter.dconf-defaults `
 ```
 ...