diff --git a/include/endian.h b/include/endian.h
index e0483d3e4c..76cc93c87b 100644
--- a/include/endian.h
+++ b/include/endian.h
@@ -45,7 +45,9 @@
  */
 
 #define LITTLE_ENDIAN         1234
+#define __LITTLE_ENDIAN       1234
 #define BIG_ENDIAN            4321
+#define __BIG_ENDIAN          4321
 
 /* Common byte swapping macros */
 
@@ -72,6 +74,7 @@
 /* Big-endian byte order */
 
 #  define BYTE_ORDER          BIG_ENDIAN
+#  define __BYTE_ORDER        BIG_ENDIAN
 
 /* Big-endian byte order macros */
 
@@ -96,6 +99,7 @@
 /* Little-endian byte order */
 
 #  define BYTE_ORDER          LITTLE_ENDIAN
+#  define __BYTE_ORDER        __LITTLE_ENDIAN
 
 /* Little-endian byte order macros */