diff --git a/test/rebuild.sh b/test/rebuild.sh
index 4acc2e61e..4f244d382 100755
--- a/test/rebuild.sh
+++ b/test/rebuild.sh
@@ -581,13 +581,11 @@ case "$DEBIAN_VERSION" in
 "bookworm")
 	mkdir -p config/bootloaders/syslinux_common
 	wget --quiet https://salsa.debian.org/installer-team/debian-installer/-/raw/master/build/boot/artwork/12-emerald/emerald.svg -O config/bootloaders/syslinux_common/splash.svg
-	mkdir -p config/bootloaders/grub-pc
-	# To have a 800x600 image and the title 'Live Boot Menu with GRUB', manually do some of the tweaks from binary_syslinux
-	# 1) Use the sharper 800x600 image instead of 640x480
-	# 2) Because the image is provided, the timestamp of theme.txt must be adjusted, otherwise it would be the date from the provided live-build folder
-	ln -s ../../isolinux/splash800x600.png config/bootloaders/grub-pc/splash.png
-	touch ${LIVE_BUILD}/share/bootloaders/grub-pc/live-theme -d@${SOURCE_DATE_EPOCH}
-	touch ${LIVE_BUILD}/share/bootloaders/grub-pc/live-theme/theme.txt -d@${SOURCE_DATE_EPOCH}
+	# To have a 800x600 image and the title 'Live Boot Menu with GRUB', manually undo the title-text modification from binary_syslinux
+	cat > config/hooks/live/5010-restore-grub-title.hook.binary << EOF
+#!/bin/sh
+sed -i -e 's|^title-text:.*|title-text: "Live Boot Menu with GRUB"|' boot/grub/live-theme/theme.txt
+EOF
 	;;
 *)
 	# Use the default 'under construction' image