diff --git a/include/configs/M5253DEMO.h b/include/configs/M5253DEMO.h
index f2f315940cdcca8f80e1d22eabc15bf469766a09..7a44cf7de607493f1c23414e49b12f379c8f5571 100644
--- a/include/configs/M5253DEMO.h
+++ b/include/configs/M5253DEMO.h
@@ -95,6 +95,7 @@
 #	define DM9000_IO		CONFIG_DM9000_BASE
 #	define DM9000_DATA		(CONFIG_DM9000_BASE + 4)
 #	undef CONFIG_DM9000_DEBUG
+#	define CONFIG_DM9000_BYTE_SWAPPED
 
 #	define CONFIG_OVERWRITE_ETHADDR_ONCE