diff --git a/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_crypto.c b/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_crypto.c
index 535a483155..4eb439f4eb 100644
--- a/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_crypto.c
+++ b/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_crypto.c
@@ -67,7 +67,7 @@ void gnrc_lorawan_calculate_mic(const le_uint32_t *dev_addr, uint32_t fcnt,
 
     memcpy(&block.dev_addr, dev_addr, sizeof(le_uint32_t));
 
-    block.fcnt = byteorder_btoll(byteorder_htonl(fcnt));
+    block.fcnt = byteorder_htoll(fcnt);
 
     block.u32_pad = 0;
 
@@ -103,7 +103,7 @@ void gnrc_lorawan_encrypt_payload(iolist_t *iolist, const le_uint32_t *dev_addr,
     block->dir = dir & DIR_MASK;
 
     block->dev_addr = *dev_addr;
-    block->fcnt = byteorder_btoll(byteorder_htonl(fcnt));
+    block->fcnt = byteorder_htoll(fcnt);
 
     block->u32_pad = 0;
 
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 09f55f4bf5..eb335f5ecf 100644
--- a/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c
+++ b/sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c
@@ -221,7 +221,7 @@ size_t gnrc_lorawan_build_hdr(uint8_t mtype, le_uint32_t *dev_addr,
     lorawan_hdr_set_ack(lw_hdr, ack);
     lorawan_hdr_set_frame_opts_len(lw_hdr, fopts_length);
 
-    lw_hdr->fcnt = byteorder_btols(byteorder_htons(fcnt));
+    lw_hdr->fcnt = byteorder_htols(fcnt);
 
     buf->index += sizeof(lorawan_hdr_t);
 
@@ -248,7 +248,7 @@ size_t gnrc_lorawan_build_uplink(gnrc_lorawan_t *mac, iolist_t *payload,
 
     lorawan_hdr_set_ack(lw_hdr, mac->mcps.ack_requested);
 
-    lw_hdr->fcnt = byteorder_btols(byteorder_htons(mac->mcps.fcnt));
+    lw_hdr->fcnt = byteorder_htols(mac->mcps.fcnt);
 
     buf.index += sizeof(lorawan_hdr_t);