diff --git a/setup/preflight.sh b/setup/preflight.sh
index 9bc968de..018d1696 100644
--- a/setup/preflight.sh
+++ b/setup/preflight.sh
@@ -8,9 +8,8 @@ if [[ $EUID -ne 0 ]]; then
 fi
 
 # Check that we are running on Ubuntu 20.04 LTS (or 20.04.xx).
-if [ "$( lsb_release --id --short )" != "Ubuntu" ] || [ "$( lsb_release --release --short )" != "22.04" ]; then
 	if [ "$( lsb_release --id --short )" != "Debian" ] || [ "$( lsb_release --release --short )" != "12" ]; then
-	echo "Mail-in-a-Box only supports being installed on Ubuntu 22.04 or Debian 12, sorry. You are running:"
+	echo "Debian Mail-in-a-Box only supports being installed on Debian 12, sorry. You are running:"
 	echo
 	lsb_release --description --short
 	echo