diff --git a/src/include/ipv4/lwip/ip.h b/src/include/ipv4/lwip/ip.h
index c8b9c222..cd907cd3 100644
--- a/src/include/ipv4/lwip/ip.h
+++ b/src/include/ipv4/lwip/ip.h
@@ -128,7 +128,7 @@ PACK_STRUCT_END
 
 #define IPH_V(hdr)  (ntohs((hdr)->_v_hl_tos) >> 12)
 #define IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f)
-#define IPH_TOS(hdr) (htons((ntohs((hdr)->_v_hl_tos) & 0xff)))
+#define IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff)
 #define IPH_LEN(hdr) ((hdr)->_len)
 #define IPH_ID(hdr) ((hdr)->_id)
 #define IPH_OFFSET(hdr) ((hdr)->_offset)