diff --git a/configs/nsim_hs38be_defconfig b/configs/nsim_hs38be_defconfig
index b074b4c..72472af 100644
--- a/configs/nsim_hs38be_defconfig
+++ b/configs/nsim_hs38be_defconfig
@@ -2,6 +2,7 @@
 CONFIG_ISA_ARCV2=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_TARGET_NSIM=y
+CONFIG_NSIM_BOARD_CPPFLAGS="-mcpu=archs"
 CONFIG_SYS_TEXT_BASE=0x81000000
 CONFIG_DEBUG_UART_BASE=0xf0000000
 CONFIG_DEBUG_UART_CLOCK=70000000