diff --git a/configs/cpu9G20_nand_defconfig b/configs/cpu9G20_nand_defconfig
index 11cc276..c405c50 100644
--- a/configs/cpu9G20_nand_defconfig
+++ b/configs/cpu9G20_nand_defconfig
@@ -1,3 +1,4 @@
 CONFIG_SYS_EXTRA_OPTIONS="CPU9G20,NANDBOOT"
 CONFIG_ARM=y
+CONFIG_ARCH_AT91=y
 CONFIG_TARGET_CPU9260=y