diff --git a/headers/build/host/darwin/endian.h b/headers/build/host/darwin/endian.h
index f8b52f1731..7c4f332b16 100644
--- a/headers/build/host/darwin/endian.h
+++ b/headers/build/host/darwin/endian.h
@@ -6,5 +6,6 @@
 #define	__LITTLE_ENDIAN	LITTLE_ENDIAN
 #define	__BIG_ENDIAN	BIG_ENDIAN
 #define	__PDP_ENDIAN	PDP_ENDIAN
+#define __BYTE_ORDER    BYTE_ORDER
 
 #endif	// _HAIKU_BUILD_COMPATIBILITY_DARWIN_ENDIAN