diff --git a/test/fuzz/fuzz_common.c b/test/fuzz/fuzz_common.c
index e8ed4329..a275265c 100644
--- a/test/fuzz/fuzz_common.c
+++ b/test/fuzz/fuzz_common.c
@@ -232,7 +232,7 @@ static void input_pkts(enum lwip_fuzz_type type, struct netif *netif, const u8_t
 #ifdef LWIP_FUZZ_SYS_NOW
         /* Extract external delay time from fuzz pool */
         memcpy(&external_delay, remfuzz_ptr, sizeof(u32_t));
-        external_delay = htonl(external_delay);
+        external_delay = ntohl(external_delay);
 #endif
         remfuzz_ptr += sizeof(u32_t);
         remfuzz_len -= sizeof(u32_t);
@@ -240,7 +240,7 @@ static void input_pkts(enum lwip_fuzz_type type, struct netif *netif, const u8_t
       memcpy(&frame_len, remfuzz_ptr, sizeof(u16_t));
       remfuzz_ptr += sizeof(u16_t);
       remfuzz_len -= sizeof(u16_t);
-      frame_len = htons(frame_len) & 0x7FF;
+      frame_len = ntohs(frame_len) & 0x7FF;
       frame_len = LWIP_MIN(frame_len, max_packet_size);
       if (frame_len > remfuzz_len) {
         frame_len = (u16_t)remfuzz_len;
@@ -287,7 +287,7 @@ tcp_app_fuzz_input(struct altcp_pcb *pcb)
     memcpy(&data_len, remfuzz_ptr, sizeof(u16_t));
     remfuzz_ptr += sizeof(u16_t);
     remfuzz_len -= sizeof(u16_t);
-    data_len = htons(data_len);
+    data_len = ntohs(data_len);
     data_len = LWIP_MIN(data_len, max_data_size);
     if (data_len > remfuzz_len) {
       data_len = (u16_t)remfuzz_len;
@@ -490,7 +490,7 @@ udp_app_fuzz_input(struct udp_pcb *pcb, const ip_addr_t *addr, u16_t port)
     memcpy(&data_len, remfuzz_ptr, sizeof(u16_t));
     remfuzz_ptr += sizeof(u16_t);
     remfuzz_len -= sizeof(u16_t);
-    data_len = htons(data_len);
+    data_len = ntohs(data_len);
     data_len = LWIP_MIN(data_len, max_data_size);
     if (data_len > remfuzz_len) {
       data_len = (u16_t)remfuzz_len;