diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 01830c7..47417cb 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -280,6 +280,7 @@
 CONFIG_SCSI=y
 CONFIG_DM_SCSI=y
 CONFIG_SANDBOX_SERIAL=y
+CONFIG_SM=y
 CONFIG_SMEM=y
 CONFIG_SANDBOX_SMEM=y
 CONFIG_SOUND=y