diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 93b52f2..da8c197 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -348,6 +348,7 @@
 CONFIG_TPM=y
 CONFIG_ERRNO_STR=y
 CONFIG_GETOPT=y
+CONFIG_EFI_RT_VOLATILE_STORE=y
 CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y
 CONFIG_EFI_CAPSULE_ON_DISK=y
 CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y