diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21d76e05..45943e95 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ CHANGELOG
 Version 71 (January 4, 2025)
 ----------------------------
 
+(Version 71a was posted on January 6, 2025 and fixes a setup regression.)
+
 Upgrades
 
 * Roundcube upgraded to version 1.6.9.
diff --git a/setup/bootstrap.sh b/setup/bootstrap.sh
index 32101955..69693455 100644
--- a/setup/bootstrap.sh
+++ b/setup/bootstrap.sh
@@ -51,7 +51,7 @@ if [ -z "$TAG" ]; then
 	if [ "$UBUNTU_VERSION" == "Ubuntu 22.04 LTS" ]; then
 		# This machine is running Ubuntu 22.04, which is supported by
 		# Mail-in-a-Box versions 60 and later.
-		TAG=v71
+		TAG=v71a
 	elif [ "$UBUNTU_VERSION" == "Ubuntu 18.04 LTS" ]; then
 		# This machine is running Ubuntu 18.04, which is supported by
 		# Mail-in-a-Box versions 0.40 through 5x.
diff --git a/setup/system.sh b/setup/system.sh
index ecfcee93..d6217396 100755
--- a/setup/system.sh
+++ b/setup/system.sh
@@ -96,8 +96,10 @@ tools/editconf.py /etc/systemd/journald.conf MaxRetentionSec=10day
 
 # Disable MOTD adverts to prevent revealing server information in MOTD request headers
 # See https://ma.ttias.be/what-exactly-being-sent-ubuntu-motd/
+if [ -f /etc/default/motd-news ]; then
 tools/editconf.py /etc/default/motd-news ENABLED=0
 rm -f /var/cache/motd-news
+fi
 
 # ### Add PPAs.