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-rw-r--r--inet/netinet/tcp.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/inet/netinet/tcp.h b/inet/netinet/tcp.h
index bc821e173e..bf12a0c609 100644
--- a/inet/netinet/tcp.h
+++ b/inet/netinet/tcp.h
@@ -43,11 +43,11 @@ struct tcphdr {
 	u_short	th_dport;		/* destination port */
 	tcp_seq	th_seq;			/* sequence number */
 	tcp_seq	th_ack;			/* acknowledgement number */
-#if BYTE_ORDER == LITTLE_ENDIAN 
+#if __BYTE_ORDER == __LITTLE_ENDIAN
 	u_char	th_x2:4,		/* (unused) */
 		th_off:4;		/* data offset */
 #endif
-#if BYTE_ORDER == BIG_ENDIAN 
+#if __BYTE_ORDER == __BIG_ENDIAN
 	u_char	th_off:4,		/* data offset */
 		th_x2:4;		/* (unused) */
 #endif