diff --git a/src/mainboard/google/brya/Kconfig.name b/src/mainboard/google/brya/Kconfig.name
index 094c7ed581..8e38735215 100644
--- a/src/mainboard/google/brya/Kconfig.name
+++ b/src/mainboard/google/brya/Kconfig.name
@@ -248,6 +248,7 @@ config BOARD_GOOGLE_MITHRAX
 config BOARD_GOOGLE_KULDAX
 	bool "->  Kuldax"
 	select BOARD_GOOGLE_BASEBOARD_BRASK
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 	select DRIVERS_GENESYSLOGIC_GL9755
 
 config BOARD_GOOGLE_JOXER
diff --git a/src/mainboard/google/brya/variants/kuldax/variant.c b/src/mainboard/google/brya/variants/kuldax/variant.c
index 04105db2ea..e9b11a639b 100644
--- a/src/mainboard/google/brya/variants/kuldax/variant.c
+++ b/src/mainboard/google/brya/variants/kuldax/variant.c
@@ -1,8 +1,14 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <baseboard/variants.h>
 #include <chip.h>
 #include <fw_config.h>
-#include <baseboard/variants.h>
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return "wifi_sar_0.hex";
+}
 
 void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
 {