diff --git a/target/linux/lantiq/base-files/etc/diag.sh b/target/linux/lantiq/base-files/etc/diag.sh
index 8356bcda69..71d6f3e511 100644
--- a/target/linux/lantiq/base-files/etc/diag.sh
+++ b/target/linux/lantiq/base-files/etc/diag.sh
@@ -25,7 +25,7 @@ set_state() {
 		;;
 	done)
 		status_led_off
-		[ -n "$running" ] & {
+		[ -n "$running" ] && {
 			status_led="$running"
 			status_led_on
 		}