diff --git a/.bin/backup-and-update-system b/.bin/backup-and-update-system
index bc52881..c28a285 100755
--- a/.bin/backup-and-update-system
+++ b/.bin/backup-and-update-system
@@ -14,26 +14,36 @@ do
 done
 
 # Do a backup.
-rsync -zaAP --numeric-ids --delete --relative \
-    --rsync-path="/usr/bin/rsync --fake-super" \
-    -e "ssh" --delete-excluded \
-    --exclude "/home/kunsi/.cache/" \
-    --exclude "/home/kunsi/.config/Rambox/" \
-    --exclude "/home/kunsi/.config/Ferdi/" \
-    --exclude "/home/kunsi/.local/lib/python*/site-packages/" \
-    --exclude "/home/kunsi/.local/share/sddm/" \
-    --exclude "/home/kunsi/.local/share/TelegramDesktop/tdata/user_data/cache/" \
-    --exclude "/home/kunsi/.mozilla/firefox/*/storage/*" \
-    --exclude "/home/kunsi/.npm/" \
-    --exclude "/home/kunsi/.nvm/" \
-    --exclude "/home/kunsi/.platformio/" \
-    --exclude "/home/kunsi/.ssh/cm-*" \
-    --exclude "/home/kunsi/.vdirsyncer" \
-    --exclude "/home/kunsi/Downloads/" \
-    --exclude "/home/kunsi/qemu/Windows_10.qcow2" \
-    --exclude "/home/kunsi/Schreibtisch/" \
-    --exclude "/home/kunsi/VirtualBox VMs/" \
-    "/home/kunsi" "kunsi-t470@home.nas":backups/
+(
+    rsync -zaAP --numeric-ids --delete --relative \
+        --rsync-path="/usr/bin/rsync --fake-super" \
+        -e "ssh" --delete-excluded \
+        --exclude "/home/kunsi/.cache/" \
+        --exclude "/home/kunsi/.config/Rambox/" \
+        --exclude "/home/kunsi/.config/Ferdi/" \
+        --exclude "/home/kunsi/.local/lib/python*/site-packages/" \
+        --exclude "/home/kunsi/.local/share/sddm/" \
+        --exclude "/home/kunsi/.local/share/TelegramDesktop/tdata/user_data/cache/" \
+        --exclude "/home/kunsi/.mozilla/firefox/*/storage/*" \
+        --exclude "/home/kunsi/.npm/" \
+        --exclude "/home/kunsi/.nvm/" \
+        --exclude "/home/kunsi/.platformio/" \
+        --exclude "/home/kunsi/.ssh/cm-*" \
+        --exclude "/home/kunsi/.vdirsyncer" \
+        --exclude "/home/kunsi/Downloads/" \
+        --exclude "/home/kunsi/qemu/Windows_10.qcow2" \
+        --exclude "/home/kunsi/Schreibtisch/" \
+        --exclude "/home/kunsi/VirtualBox VMs/" \
+        "/home/kunsi" "kunsi-t470@home.nas":backups/
+
+    # Exit code 24 means some files have vanished during rsync.
+    # I don't know why, but this is very common, apparently?
+    exitcode=$?
+    if [[ $exitcode != 0 ]] && [[ $exitcode != 24 ]]
+    then
+        exit 1
+    fi
+)
 
 # Do updates
 sudo pacman -Syu --noconfirm