diff --git a/arch/Kconfig b/arch/Kconfig
index 10f977b7106..5ad1465ccae 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -134,7 +134,7 @@ config USERSPACE
 
 config PRIVILEGED_STACK_SIZE
 	int "Size of privileged stack"
-	default 512 if MPU_STACK_GUARD
+	default 512 if MPU_STACK_GUARD || BUILTIN_STACK_GUARD
 	default 384 if ARC
 	default 256
 	depends on ARCH_HAS_USERSPACE