diff --git a/pkg/semtech-loramac/contrib/semtech_loramac.c b/pkg/semtech-loramac/contrib/semtech_loramac.c
index 8ca300089d..f2c4c06f63 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac.c
@@ -378,7 +378,7 @@ void _init_loramac(semtech_loramac_t *mac,
     semtech_loramac_set_dr(mac, LORAMAC_DEFAULT_DR);
     semtech_loramac_set_adr(mac, LORAMAC_DEFAULT_ADR);
     semtech_loramac_set_public_network(mac, LORAMAC_DEFAULT_PUBLIC_NETWORK);
-    semtech_loramac_set_class(mac, LORAMAC_DEFAULT_DEVICE_CLASS);
+    semtech_loramac_set_class(mac, CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS);
     semtech_loramac_set_tx_port(mac, LORAMAC_DEFAULT_TX_PORT);
     semtech_loramac_set_tx_mode(mac, LORAMAC_DEFAULT_TX_MODE);
     semtech_loramac_set_system_max_rx_error(mac,
diff --git a/sys/include/net/loramac.h b/sys/include/net/loramac.h
index e020252eb1..fafd8a6bf6 100644
--- a/sys/include/net/loramac.h
+++ b/sys/include/net/loramac.h
@@ -103,9 +103,19 @@ extern "C" {
 
 /**
  * @brief   Default device class (A, B or C)
+ *
+ * @note GNRC LoRaWAN only supports Class A
  */
-#ifndef LORAMAC_DEFAULT_DEVICE_CLASS
-#define LORAMAC_DEFAULT_DEVICE_CLASS           (LORAMAC_CLASS_A)
+#if IS_ACTIVE(CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS_A)
+#define CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS     (LORAMAC_CLASS_A)
+#elif IS_ACTIVE(CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS_B)
+#define CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS     (LORAMAC_CLASS_B)
+#elif IS_ACTIVE(CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS_C)
+#define CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS     (LORAMAC_CLASS_C)
+#endif
+
+#ifndef CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS
+#define CONFIG_LORAMAC_DEFAULT_DEVICE_CLASS     (LORAMAC_CLASS_A)
 #endif
 
 /**