diff --git a/src/mainboard/google/fatcat/variants/kinmen/Makefile.mk b/src/mainboard/google/fatcat/variants/kinmen/Makefile.mk
index 4c33dad4db..cbe8155bd4 100644
--- a/src/mainboard/google/fatcat/variants/kinmen/Makefile.mk
+++ b/src/mainboard/google/fatcat/variants/kinmen/Makefile.mk
@@ -4,3 +4,4 @@ bootblock-y += gpio.c
 romstage-y += gpio.c
 romstage-y += memory.c
 ramstage-y += gpio.c
+ramstage-$(CONFIG_FW_CONFIG) += variant.c
diff --git a/src/mainboard/google/fatcat/variants/kinmen/overridetree.cb b/src/mainboard/google/fatcat/variants/kinmen/overridetree.cb
index d3025dd8c6..624fa76f3b 100644
--- a/src/mainboard/google/fatcat/variants/kinmen/overridetree.cb
+++ b/src/mainboard/google/fatcat/variants/kinmen/overridetree.cb
@@ -1,4 +1,7 @@
 fw_config
+	field WIFI 2 2
+		option WIFI_CNVI_7		0
+	end
 	field AUDIO 3 5
 		option AUDIO_UNKNOWN		0
 		option AUDIO_ALC721_SNDW	1
diff --git a/src/mainboard/google/fatcat/variants/kinmen/variant.c b/src/mainboard/google/fatcat/variants/kinmen/variant.c
new file mode 100644
index 0000000000..4221a5bf8e
--- /dev/null
+++ b/src/mainboard/google/fatcat/variants/kinmen/variant.c
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <fw_config.h>
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return get_wifi_sar_fw_config_filename(FW_CONFIG_FIELD(WIFI));
+}