diff --git a/drivers/sx127x/sx127x_getset.c b/drivers/sx127x/sx127x_getset.c
index 5744aaf778..46a27bb67b 100644
--- a/drivers/sx127x/sx127x_getset.c
+++ b/drivers/sx127x/sx127x_getset.c
@@ -123,7 +123,7 @@ uint32_t sx127x_get_channel(const sx127x_t *dev)
 
 void sx127x_set_channel(sx127x_t *dev, uint32_t channel)
 {
-    DEBUG("[sx127x] Set channel: %lu\n", channel);
+    DEBUG("[sx127x] Set channel: %" PRIu32 "\n", channel);
 
     /* Save current operating mode */
     dev->settings.channel = channel;
@@ -814,14 +814,14 @@ void sx127x_set_preamble_length(sx127x_t *dev, uint16_t preamble)
 
 void sx127x_set_rx_timeout(sx127x_t *dev, uint32_t timeout)
 {
-    DEBUG("[sx127x] Set RX timeout: %lu\n", timeout);
+    DEBUG("[sx127x] Set RX timeout: %" PRIu32 "\n", timeout);
 
     dev->settings.lora.rx_timeout = timeout;
 }
 
 void sx127x_set_tx_timeout(sx127x_t *dev, uint32_t timeout)
 {
-    DEBUG("[sx127x] Set TX timeout: %lu\n", timeout);
+    DEBUG("[sx127x] Set TX timeout: %" PRIu32 "\n", timeout);
 
     dev->settings.lora.tx_timeout = timeout;
 }
diff --git a/tests/driver_sx127x/main.c b/tests/driver_sx127x/main.c
index b18d9965c5..ea293a017e 100644
--- a/tests/driver_sx127x/main.c
+++ b/tests/driver_sx127x/main.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <inttypes.h>
 
 #include "thread.h"
 #include "xtimer.h"
@@ -328,7 +329,7 @@ static void _event_cb(netdev_t *dev, netdev_event_t event)
             case NETDEV_EVENT_RX_COMPLETE:
                 len = dev->driver->recv(dev, NULL, 0, 0);
                 dev->driver->recv(dev, message, len, &packet_info);
-                printf("{Payload: \"%s\" (%d bytes), RSSI: %i, SNR: %i, TOA: %lu}\n",
+                printf("{Payload: \"%s\" (%d bytes), RSSI: %i, SNR: %i, TOA: %" PRIu32 "}\n",
                        message, (int)len,
                        packet_info.rssi, (int)packet_info.snr,
                        sx127x_get_time_on_air((const sx127x_t*)dev, len));