diff --git a/birdnet-pi/rootfs/custom-services.d/01-avahi.sh b/birdnet-pi/rootfs/custom-services.d/01-avahi.sh
index 0525aa1d8..2f7826808 100755
--- a/birdnet-pi/rootfs/custom-services.d/01-avahi.sh
+++ b/birdnet-pi/rootfs/custom-services.d/01-avahi.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/with-contenv bashio
+# shellcheck shell=bash
 # Waiting for dbus
 until [[ -e /var/run/dbus/system_bus_socket ]]; do
     sleep 1s