diff --git a/sys/include/net/loramac.h b/sys/include/net/loramac.h
index 31b5ec787d..d45548ed4c 100644
--- a/sys/include/net/loramac.h
+++ b/sys/include/net/loramac.h
@@ -377,8 +377,8 @@ extern "C" {
 /**
  * @brief   Default max FCNT gap
  */
-#ifndef LORAMAC_DEFAULT_MAX_FCNT_GAP
-#define LORAMAC_DEFAULT_MAX_FCNT_GAP           (16384U)
+#ifndef CONFIG_LORAMAC_DEFAULT_MAX_FCNT_GAP
+#define CONFIG_LORAMAC_DEFAULT_MAX_FCNT_GAP     (16384U)
 #endif
 
 /**
diff --git a/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c b/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c
index 676b588c9e..ff6e2b1b49 100644
--- a/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c
+++ b/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c
@@ -53,7 +53,7 @@ uint32_t gnrc_lorawan_fcnt_stol(uint32_t fcnt_down, uint16_t s_fcnt)
 {
     uint32_t u32_fcnt = (fcnt_down & _16_UPPER_BITMASK) | s_fcnt;
 
-    if (fcnt_down + LORAMAC_DEFAULT_MAX_FCNT_GAP >= _16_LOWER_BITMASK
+    if (fcnt_down + CONFIG_LORAMAC_DEFAULT_MAX_FCNT_GAP >= _16_LOWER_BITMASK
         && s_fcnt < (fcnt_down & _16_LOWER_BITMASK)) {
         u32_fcnt += _16_LOWER_BITMASK;
     }
@@ -95,7 +95,7 @@ int gnrc_lorawan_parse_dl(gnrc_lorawan_t *mac, uint8_t *buf, size_t len,
         gnrc_lorawan_fcnt_stol(mac->mcps.fcnt_down, _hdr->fcnt.u16);
 
     if (mac->mcps.fcnt_down > _fcnt || mac->mcps.fcnt_down +
-        LORAMAC_DEFAULT_MAX_FCNT_GAP < _fcnt) {
+        CONFIG_LORAMAC_DEFAULT_MAX_FCNT_GAP < _fcnt) {
         DEBUG("gnrc_lorawan: wrong frame counter\n");
         return -1;
     }