diff --git a/include/ac/socket.h b/include/ac/socket.h
index 1527d02e5f051ecf8f8791e6bf8fd7e452128213..ced2879abf504025c903d85769e29982ccc6ea8e 100644
--- a/include/ac/socket.h
+++ b/include/ac/socket.h
@@ -78,23 +78,4 @@
 
 #endif /* __alpha && !VMS */
 
-#ifndef BYTE_ORDER
-/*    
- * Definitions for byte order, according to byte significance from low
- * address to high.
- */
-#define LITTLE_ENDIAN   1234	/* LSB first: i386, vax */
-#define BIG_ENDIAN  4321		/* MSB first: 68000, ibm, net */
-#define PDP_ENDIAN  3412		/* LSB first in word, MSW first in long */
-
-/* assume autoconf's AC_C_BIGENDIAN has been run */
-/* if it hasn't, we assume (maybe falsely) the order is LITTLE ENDIAN */
-#ifdef WORDS_BIGENDIAN
-#define BYTE_ORDER  BIG_ENDIAN
-#else
-#define BYTE_ORDER  LITTLE_ENDIAN
-#endif
-
-#endif /* BYTE_ORDER */
-
 #endif /* _AC_SOCKET_H_ */