diff --git a/include/configs/sbc8641d.h b/include/configs/sbc8641d.h
index 3525ab4..54eac38 100644
--- a/include/configs/sbc8641d.h
+++ b/include/configs/sbc8641d.h
@@ -270,9 +270,6 @@
 #define CONFIG_OF_FLAT_TREE	1
 #define CONFIG_OF_BOARD_SETUP	1
 
-/* maximum size of the flat tree (8K) */
-#define OF_FLAT_TREE_MAX_SIZE	8192
-
 #define OF_CPU		"PowerPC,8641@0"
 #define OF_SOC		"soc@f8000000"
 #define OF_TBCLK	(bd->bi_busfreq / 4)