diff --git a/src/mainboard/google/brox/Kconfig b/src/mainboard/google/brox/Kconfig
index 18a657545c..e6d1f1e5cc 100644
--- a/src/mainboard/google/brox/Kconfig
+++ b/src/mainboard/google/brox/Kconfig
@@ -53,6 +53,7 @@ config BOARD_GOOGLE_BASEBOARD_BROX
 
 config BOARD_GOOGLE_BROX
 	select BOARD_GOOGLE_BASEBOARD_BROX
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 
 if BOARD_GOOGLE_BROX_COMMON
 
diff --git a/src/mainboard/google/brox/variants/brox/variant.c b/src/mainboard/google/brox/variants/brox/variant.c
index acb5b66f6c..39162d5bf6 100644
--- a/src/mainboard/google/brox/variants/brox/variant.c
+++ b/src/mainboard/google/brox/variants/brox/variant.c
@@ -1,9 +1,16 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <assert.h>
+#include <baseboard/variants.h>
 #include <chip.h>
 #include <fw_config.h>
-#include <baseboard/variants.h>
+#include <sar.h>
 
 void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
 {
 }
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return get_wifi_sar_fw_config_filename(FW_CONFIG_FIELD(WIFI));
+}