diff --git a/src/soc/amd/stoneyridge/Kconfig b/src/soc/amd/stoneyridge/Kconfig
index 9596dc8..05c3043 100644
--- a/src/soc/amd/stoneyridge/Kconfig
+++ b/src/soc/amd/stoneyridge/Kconfig
@@ -292,6 +292,10 @@
 	hex
 	default 0x150000
 
+config SMM_MODULE_STACK_SIZE
+	hex
+	default 0x800
+
 config ACPI_CPU_STRING
 	string
 	default "\\_PR.P%03d"