diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index ae5f7a7..09cd75d 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -131,6 +131,7 @@
 	select UDELAY_TSC
 	select UDK_202005_BINDING
 	select VBOOT_LIB
+	select X86_CLFLUSH_CAR
 
 config SOC_INTEL_ALDERLAKE_TCSS_USB4_SUPPORT
 	bool