diff --git a/pkg/semtech-loramac/contrib/semtech_loramac.c b/pkg/semtech-loramac/contrib/semtech_loramac.c
index 682ce1c095ed..2329708efaf1 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac.c
@@ -433,10 +433,14 @@ void _init_loramac(semtech_loramac_t *mac,
     semtech_loramac_set_class(mac, 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,
+            LORAMAC_DEFAULT_SYSTEM_MAX_RX_ERROR);
+    semtech_loramac_set_min_rx_symbols(mac, LORAMAC_DEFAULT_MIN_RX_SYMBOLS);
     mac->link_chk.available = false;
 #ifdef MODULE_PERIPH_EEPROM
     _read_loramac_config(mac);
 #endif
+
 }
 
 static void _join_otaa(semtech_loramac_t *mac)
diff --git a/pkg/semtech-loramac/contrib/semtech_loramac_getset.c b/pkg/semtech-loramac/contrib/semtech_loramac_getset.c
index e007d77bf89d..72d9e8d67169 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac_getset.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac_getset.c
@@ -253,6 +253,26 @@ 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)
+{
+    MibRequestConfirm_t mibReq;
+    mutex_lock(&mac->lock);
+    mibReq.Type = MIB_SYSTEM_MAX_RX_ERROR;
+    mibReq.Param.SystemMaxRxError = error;
+    LoRaMacMibSetRequestConfirm(&mibReq);
+    mutex_unlock(&mac->lock);
+}
+
+void semtech_loramac_set_min_rx_symbols(semtech_loramac_t *mac, int min_rx)
+{
+    MibRequestConfirm_t mibReq;
+    mutex_lock(&mac->lock);
+    mibReq.Type = MIB_MIN_RX_SYMBOLS;
+    mibReq.Param.MinRxSymbols = min_rx;
+    LoRaMacMibSetRequestConfirm(&mibReq);
+    mutex_unlock(&mac->lock);
+}
+
 static void _semtech_loramac_set_rx2_params(semtech_loramac_channel_params_t params)
 {
     Rx2ChannelParams_t p;
diff --git a/pkg/semtech-loramac/contrib/semtech_loramac_radio.c b/pkg/semtech-loramac/contrib/semtech_loramac_radio.c
index 0ba549cd905a..a0cf9be65576 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac_radio.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac_radio.c
@@ -96,7 +96,7 @@ void SX127XSetRxConfig(RadioModems_t modem, uint32_t bandwidth,
     sx127x_set_freq_hop(&sx127x, freqHopOn);
     sx127x_set_hop_period(&sx127x, hopPeriod);
     sx127x_set_iq_invert(&sx127x, iqInverted);
-    sx127x_set_symbol_timeout(&sx127x, 2 * symbTimeout);
+    sx127x_set_symbol_timeout(&sx127x, symbTimeout);
     sx127x_set_rx_single(&sx127x, !rxContinuous);
 }
 
diff --git a/pkg/semtech-loramac/contrib/semtech_loramac_timer.c b/pkg/semtech-loramac/contrib/semtech_loramac_timer.c
index 59686b5645ef..346bc7fe935d 100644
--- a/pkg/semtech-loramac/contrib/semtech_loramac_timer.c
+++ b/pkg/semtech-loramac/contrib/semtech_loramac_timer.c
@@ -60,12 +60,7 @@ void TimerSetValue(TimerEvent_t *obj, uint32_t value)
         xtimer_remove(&(obj->dev));
     }
 
-    /* According to the lorawan specifications, the data sent from the gateway
-       could arrive with a short shift in time of +/- 20ms. Here the timeout is
-       triggered 50ms in advance to make sure the radio switches to RX mode on
-       time and doesn't miss any downlink messages, taking in consideration
-       possible xtimer inaccuracies. */
-    obj->timeout = (value - 50) * US_PER_MS;
+    obj->timeout = value * US_PER_MS;
 }
 
 TimerTime_t TimerGetCurrentTime(void)
diff --git a/pkg/semtech-loramac/include/semtech_loramac.h b/pkg/semtech-loramac/include/semtech_loramac.h
index 670a8da92c41..2e58021d1bc3 100644
--- a/pkg/semtech-loramac/include/semtech_loramac.h
+++ b/pkg/semtech-loramac/include/semtech_loramac.h
@@ -388,6 +388,22 @@ uint8_t semtech_loramac_get_tx_power(semtech_loramac_t *mac);
  */
 void semtech_loramac_set_tx_port(semtech_loramac_t *mac, uint8_t port);
 
+/**
+ * @brief   Sets the maximum system overall timing error for RX (in ms)
+ *
+ * @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);
+
+/**
+ * @brief   Sets the minimum required number of symbols to detect a frame
+ *
+ * @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);
+
 /**
  * @brief   Gets the TX application port
  *
diff --git a/sys/include/net/loramac.h b/sys/include/net/loramac.h
index 60153b0995b4..91f388072d85 100644
--- a/sys/include/net/loramac.h
+++ b/sys/include/net/loramac.h
@@ -106,69 +106,69 @@ extern "C" {
  * @brief   Default device class (A, B or C)
  */
 #ifndef LORAMAC_DEFAULT_DEVICE_CLASS
-#define LORAMAC_DEFAULT_DEVICE_CLASS    (LORAMAC_CLASS_A)
+#define LORAMAC_DEFAULT_DEVICE_CLASS           (LORAMAC_CLASS_A)
 #endif
 
 /**
  * @brief   Default NetID (only valid with ABP join procedure)
  */
 #ifndef LORAMAC_DEFAULT_NETID
-#define LORAMAC_DEFAULT_NETID           (1U)
+#define LORAMAC_DEFAULT_NETID                  (1U)
 #endif
 
 /**
  * @brief   Default network type (public or private)
  */
 #ifndef LORAMAC_DEFAULT_PUBLIC_NETWORK
-#define LORAMAC_DEFAULT_PUBLIC_NETWORK  (true)
+#define LORAMAC_DEFAULT_PUBLIC_NETWORK         (true)
 #endif
 /**
  * @brief   Default datarate (only valid for EU)
  */
 #ifndef LORAMAC_DEFAULT_DR
-#define LORAMAC_DEFAULT_DR             (LORAMAC_DR_0)
+#define LORAMAC_DEFAULT_DR                     (LORAMAC_DR_0)
 #endif
 
 /**
  * @brief   Default MAC TX power (14dBm in EU)
  */
 #ifndef LORAMAC_DEFAULT_TX_POWER
-#define LORAMAC_DEFAULT_TX_POWER       (LORAMAC_TX_PWR_1)
+#define LORAMAC_DEFAULT_TX_POWER               (LORAMAC_TX_PWR_1)
 #endif
 
 /**
  * @brief   Default MAC TX port (from 1 to 223)
  */
 #ifndef LORAMAC_DEFAULT_TX_PORT
-#define LORAMAC_DEFAULT_TX_PORT        (2U)
+#define LORAMAC_DEFAULT_TX_PORT                (2U)
 #endif
 
 /**
  * @brief   Default MAC TX mode (confirmable or unconfirmable)
  */
  #ifndef LORAMAC_DEFAULT_TX_MODE
- #define LORAMAC_DEFAULT_TX_MODE        (LORAMAC_TX_CNF)
+ #define LORAMAC_DEFAULT_TX_MODE               (LORAMAC_TX_CNF)
  #endif
 
 /**
  * @brief   Default MAC TX power (14dBm in EU)
  */
 #ifndef LORAMAC_DEFAULT_TX_POWER
-#define LORAMAC_DEFAULT_TX_POWER       (LORAMAC_TX_PWR_1)
+#define LORAMAC_DEFAULT_TX_POWER               (LORAMAC_TX_PWR_1)
 #endif
 
 /**
  * @brief   Default adaptive datarate state
  */
 #ifndef LORAMAC_DEFAULT_ADR
-#define LORAMAC_DEFAULT_ADR            (false)
+#define LORAMAC_DEFAULT_ADR                    (false)
 #endif
 
 /**
  * @brief   Default uplink retransmission
  */
 #ifndef LORAMAC_DEFAULT_RETX
-#define LORAMAC_DEFAULT_RETX           (5U)
+#define LORAMAC_DEFAULT_RETX                   (5U)
 #endif
 
 /**
@@ -177,89 +177,103 @@ extern "C" {
  *          0 means the link check process is disabled
  */
 #ifndef LORAMAC_DEFAULT_LINKCHK
-#define LORAMAC_DEFAULT_LINKCHK        (0U)
+#define LORAMAC_DEFAULT_LINKCHK                (0U)
 #endif
 
 /**
  * @brief   Default first RX window delay (in ms)
  */
 #ifndef LORAMAC_DEFAULT_RX1_DELAY
-#define LORAMAC_DEFAULT_RX1_DELAY      (1000U)
+#define LORAMAC_DEFAULT_RX1_DELAY              (1000U)
 #endif
 
 /**
  * @brief   Default second RX window delay (in ms)
  */
-#define LORAMAC_DEFAULT_RX2_DELAY      (1000U + LORAMAC_DEFAULT_RX1_DELAY)
+#define LORAMAC_DEFAULT_RX2_DELAY              (1000U + LORAMAC_DEFAULT_RX1_DELAY)
 
 /**
  * @brief   Default automatic reply status
  */
 #ifndef LORAMAC_DEFAULT_AR
-#define LORAMAC_DEFAULT_AR             (false)
+#define LORAMAC_DEFAULT_AR                     (false)
 #endif
 
 /**
  * @brief   Default second RX window datarate index
  */
 #ifndef LORAMAC_DEFAULT_RX2_DR
-#define LORAMAC_DEFAULT_RX2_DR         (LORAMAC_DR_0)
+#define LORAMAC_DEFAULT_RX2_DR                 (LORAMAC_DR_0)
 #endif
 
 /**
  * @brief   Default second RX window frequency (in Hz)
  */
 #ifndef LORAMAC_DEFAULT_RX2_FREQ
-#define LORAMAC_DEFAULT_RX2_FREQ       (869525000UL)
+#define LORAMAC_DEFAULT_RX2_FREQ               (869525000UL)
 #endif
 
 /**
  * @brief   Default LoRaMAC join procedure
  */
 #ifndef LORAMAC_DEFAULT_JOIN_PROCEDURE
-#define LORAMAC_DEFAULT_JOIN_PROCEDURE (LORAMAC_JOIN_OTAA)
+#define LORAMAC_DEFAULT_JOIN_PROCEDURE         (LORAMAC_JOIN_OTAA)
 #endif
 
 /**
  * @brief   Default LoRaMAC join accept delay 1 (in seconds)
  */
 #ifndef LORAMAC_DEFAULT_JOIN_DELAY1
-#define LORAMAC_DEFAULT_JOIN_DELAY1    (5U)
+#define LORAMAC_DEFAULT_JOIN_DELAY1            (5U)
 #endif
 
 /**
  * @brief   Default LoRaMAC join accept delay 2
  */
 #ifndef LORAMAC_DEFAULT_JOIN_DELAY2
-#define LORAMAC_DEFAULT_JOIN_DELAY2    (6U)
+#define LORAMAC_DEFAULT_JOIN_DELAY2            (6U)
 #endif
 
 /**
  * @brief   Default max FCNT gap
  */
 #ifndef LORAMAC_DEFAULT_MAX_FCNT_GAP
-#define LORAMAC_DEFAULT_MAX_FCNT_GAP   (16384U)
+#define LORAMAC_DEFAULT_MAX_FCNT_GAP           (16384U)
 #endif
 
 /**
  * @brief   Default adaptive datarate ACK limit (in s)
  */
 #ifndef LORAMAC_DEFAULT_ADR_ACK_LIMIT
-#define LORAMAC_DEFAULT_ADR_ACK_LIMIT  (64U)
+#define LORAMAC_DEFAULT_ADR_ACK_LIMIT          (64U)
 #endif
 
 /**
  * @brief   Default adaptive datarate ACK delay (in s)
  */
 #ifndef LORAMAC_DEFAULT_ADR_ACK_DELAY
-#define LORAMAC_DEFAULT_ADR_ACK_DELAY  (32U)
+#define LORAMAC_DEFAULT_ADR_ACK_DELAY          (32U)
 #endif
 
 /**
  * @brief   Default adaptive datarate timeout
  */
 #ifndef LORAMAC_DEFAULT_ADR_TIMEOUT
-#define LORAMAC_DEFAULT_ADR_TIMEOUT    (3U)
+#define LORAMAC_DEFAULT_ADR_TIMEOUT            (3U)
+#endif
+
+/**
+ * @brief   Default maximum system overall timing error
+ */
+#ifndef LORAMAC_DEFAULT_SYSTEM_MAX_RX_ERROR
+#define LORAMAC_DEFAULT_SYSTEM_MAX_RX_ERROR    (50)
+#endif
+
+/**
+ * @brief   Default minimum RX symbols to detect a frame
+ */
+#ifndef LORAMAC_DEFAULT_MIN_RX_SYMBOLS
+#define LORAMAC_DEFAULT_MIN_RX_SYMBOLS         (12)
 #endif
 /** @} */