diff --git a/pkg/semtech-loramac/contrib/semtech_loramac.c b/pkg/semtech-loramac/contrib/semtech_loramac.c
index a20d86ad26..e86c41080b 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac.c
@@ -392,7 +392,7 @@ void _init_loramac(semtech_loramac_t *mac,
     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,
-            LORAMAC_DEFAULT_SYSTEM_MAX_RX_ERROR);
+                                            LORAMAC_DEFAULT_SYSTEM_MAX_RX_ERROR);
     semtech_loramac_set_min_rx_symbols(mac, LORAMAC_DEFAULT_MIN_RX_SYMBOLS);
 #ifdef MODULE_PERIPH_EEPROM
     _read_loramac_config(mac);
diff --git a/pkg/semtech-loramac/contrib/semtech_loramac_getset.c b/pkg/semtech-loramac/contrib/semtech_loramac_getset.c
index 5869b947ce..e8bacc3b82 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac_getset.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac_getset.c
@@ -290,7 +290,7 @@ uint8_t semtech_loramac_get_tx_mode(semtech_loramac_t *mac)
     return mac->cnf;
 }
 
-void semtech_loramac_set_system_max_rx_error(semtech_loramac_t *mac, int error)
+void semtech_loramac_set_system_max_rx_error(semtech_loramac_t *mac, uint32_t error)
 {
     MibRequestConfirm_t mibReq;
     mutex_lock(&mac->lock);
@@ -300,7 +300,7 @@ void semtech_loramac_set_system_max_rx_error(semtech_loramac_t *mac, int error)
     mutex_unlock(&mac->lock);
 }
 
-void semtech_loramac_set_min_rx_symbols(semtech_loramac_t *mac, int min_rx)
+void semtech_loramac_set_min_rx_symbols(semtech_loramac_t *mac, uint8_t min_rx)
 {
     MibRequestConfirm_t mibReq;
     mutex_lock(&mac->lock);
diff --git a/pkg/semtech-loramac/include/semtech_loramac.h b/pkg/semtech-loramac/include/semtech_loramac.h
index 16e60a4688..d32d0dbcdf 100644
--- a/pkg/semtech-loramac/include/semtech_loramac.h
+++ b/pkg/semtech-loramac/include/semtech_loramac.h
@@ -429,7 +429,7 @@ void semtech_loramac_set_tx_port(semtech_loramac_t *mac, uint8_t port);
  * @param[in] mac          Pointer to the mac
  * @param[in] error        The maximum rx timing error
  */
-void semtech_loramac_set_system_max_rx_error(semtech_loramac_t *mac, int error);
+void semtech_loramac_set_system_max_rx_error(semtech_loramac_t *mac, uint32_t error);
 
 /**
  * @brief   Sets the minimum required number of symbols to detect a frame
@@ -437,7 +437,7 @@ void semtech_loramac_set_system_max_rx_error(semtech_loramac_t *mac, int error);
  * @param[in] mac          Pointer to the mac
  * @param[in] min_rx       The minimum rx symbols
  */
-void semtech_loramac_set_min_rx_symbols(semtech_loramac_t *mac, int min_rx);
+void semtech_loramac_set_min_rx_symbols(semtech_loramac_t *mac, uint8_t min_rx);
 
 /**
  * @brief   Gets the TX application port