diff --git a/platform/cc2538dk/contiki-conf.h b/platform/cc2538dk/contiki-conf.h
index 20cee3614..84d78d9a1 100644
--- a/platform/cc2538dk/contiki-conf.h
+++ b/platform/cc2538dk/contiki-conf.h
@@ -390,7 +390,7 @@ typedef uint32_t rtimer_clock_t;
  */
 /* RF Config */
 #ifndef IEEE802154_CONF_PANID
-#define IEEE802154_CONF_PANID           0x5449 /**< Default PAN ID: TI */
+#define IEEE802154_CONF_PANID           0xABCD
 #endif
 
 #ifndef CC2538_RF_CONF_CHANNEL