diff --git a/src/mainboard/google/reef/variants/baseboard/include/baseboard/acpi/dptf.asl b/src/mainboard/google/reef/variants/baseboard/include/baseboard/acpi/dptf.asl
index 87d3fa3ab3..dba182e834 100644
--- a/src/mainboard/google/reef/variants/baseboard/include/baseboard/acpi/dptf.asl
+++ b/src/mainboard/google/reef/variants/baseboard/include/baseboard/acpi/dptf.asl
@@ -29,7 +29,7 @@
 
 #define DPTF_TSR1_SENSOR_ID	1
 #define DPTF_TSR1_SENSOR_NAME	"Ambient"
-#define DPTF_TSR1_PASSIVE	45
+#define DPTF_TSR1_PASSIVE	46
 #define DPTF_TSR1_CRITICAL	75
 
 #define DPTF_TSR2_SENSOR_ID	2