diff --git a/configs/cpu9G20_128M_defconfig b/configs/cpu9G20_128M_defconfig
index 4c28d25..8d33f08 100644
--- a/configs/cpu9G20_128M_defconfig
+++ b/configs/cpu9G20_128M_defconfig
@@ -1,3 +1,4 @@
 CONFIG_SYS_EXTRA_OPTIONS="CPU9G20,CPU9G20_128M"
 CONFIG_ARM=y
+CONFIG_ARCH_AT91=y
 CONFIG_TARGET_CPU9260=y