diff --git a/tests/ieee802154_submac/main.c b/tests/ieee802154_submac/main.c
index c58a633910..09a568ff24 100644
--- a/tests/ieee802154_submac/main.c
+++ b/tests/ieee802154_submac/main.c
@@ -37,8 +37,6 @@
 
 #define MAX_LINE    (80)
 
-/* Only the first radio is supported so far */
-#define RADIO_DEFAULT_ID (0U)
 
 netdev_ieee802154_submac_t netdev_submac;
 mutex_t lock;