diff --git a/birdnet-pi/rootfs/etc/cont-init.d/81-modifications.sh b/birdnet-pi/rootfs/etc/cont-init.d/81-modifications.sh
index 14c61faa9..23c78f432 100755
--- a/birdnet-pi/rootfs/etc/cont-init.d/81-modifications.sh
+++ b/birdnet-pi/rootfs/etc/cont-init.d/81-modifications.sh
@@ -66,8 +66,10 @@ sed -i "/User=pi/d" "$HOME/BirdNET-Pi/templates/birdnet_log.service"
 sed -i "s|birdnet_log.sh|cat /proc/1/fd/1|g" "$HOME/BirdNET-Pi/templates/birdnet_log.service"
 
 # Correct backup script
-echo "... correct backup script"
-sed -i "/PHP_SERVICE=/c PHP_SERVICE=\$(systemctl list-unit-files -t service --no-pager | grep 'php' | grep 'fpm' | awk '{print \$1}')" "$HOME/BirdNET-Pi/scripts/backup_data.sh"
+if [[ -f "$HOME/BirdNET-Pi/scripts/backup_data.sh" ]]; then
+    echo "... correct backup script"
+    sed -i "/PHP_SERVICE=/c PHP_SERVICE=\$(systemctl list-unit-files -t service --no-pager | grep 'php' | grep 'fpm' | awk '{print \$1}')" "$HOME/BirdNET-Pi/scripts/backup_data.sh"
+fi
 
 # Caddyfile modifications
 echo "... modifying Caddyfile configurations"