diff --git a/configs/qemu-riscv64_smode_defconfig b/configs/qemu-riscv64_smode_defconfig
index 20f1def..33776f0 100644
--- a/configs/qemu-riscv64_smode_defconfig
+++ b/configs/qemu-riscv64_smode_defconfig
@@ -1,4 +1,5 @@
 CONFIG_RISCV=y
+CONFIG_ENV_SIZE=0x20000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_TARGET_QEMU_VIRT=y
 CONFIG_ARCH_RV64I=y