diff --git a/src/soc/intel/common/block/thermal/thermal.c b/src/soc/intel/common/block/thermal/thermal.c
index 6211f35bd1..11a6108904 100644
--- a/src/soc/intel/common/block/thermal/thermal.c
+++ b/src/soc/intel/common/block/thermal/thermal.c
@@ -23,7 +23,7 @@ static uint8_t get_thermal_trip_temp(void)
 }
 
 /* PCH Low Temp Threshold (LTT) */
-static uint16_t pch_get_ltt_value(struct device *dev)
+static uint32_t pch_get_ltt_value(struct device *dev)
 {
 	uint8_t thermal_config;