diff --git a/headers/posix/endian.h b/headers/posix/endian.h
index ba93bb128a..2b9df1a3ad 100644
--- a/headers/posix/endian.h
+++ b/headers/posix/endian.h
@@ -16,11 +16,11 @@
 
 #if defined(__HAIKU_LITTLE_ENDIAN)
 #	define LITTLE_ENDIAN	1234
-#	define BIG_ENDIAN		0
+#	define BIG_ENDIAN		4321
 #	define BYTE_ORDER		LITTLE_ENDIAN
 #elif defined(__HAIKU_BIG_ENDIAN)
 #	define BIG_ENDIAN		4321
-#	define LITTLE_ENDIAN	0
+#	define LITTLE_ENDIAN	1234
 #	define BYTE_ORDER		BIG_ENDIAN
 #endif
 
@@ -28,4 +28,4 @@
 #define __LITTLE_ENDIAN		LITTLE_ENDIAN
 #define __BYTE_ORDER		BYTE_ORDER
 
-#endif	/* _ENDIAN_H_ */
+#endif	/* _ENDIAN_H_ */
\ No newline at end of file
diff --git a/headers/posix/sys/types.h b/headers/posix/sys/types.h
index 64d497eba9..28ddc6b27f 100644
--- a/headers/posix/sys/types.h
+++ b/headers/posix/sys/types.h
@@ -122,6 +122,7 @@ struct _pthread_spinlock {
 };
 
 
+#include <endian.h>
 #include <null.h>
 #include <size_t.h>
 #include <time.h>