diff --git a/config/includes.installer/preseed.cfg b/config/includes.installer/preseed.cfg
index 0fdfd77..9aea928 100644
--- a/config/includes.installer/preseed.cfg
+++ b/config/includes.installer/preseed.cfg
@@ -482,7 +482,7 @@ d-i finish-install/reboot_in_progress note
 # packages and run commands in the target system.
 #d-i preseed/late_command string apt-install zsh; in-target chsh -s /bin/zsh
 d-i preseed/late_command string \
-    in-target sed -i 's/GRUB_CMDLINE_LINUX_DEFAULT="quiet"/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"/'; \
+    in-target sed -i 's/GRUB_CMDLINE_LINUX_DEFAULT="quiet"/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"/' /etc/default/grub; \
     in-target grub-mkconfig -o /boot/grub/grub.cfg
 
 # By default, the system's locate database will be updated after the