diff --git a/temp.c b/temp.c
index 7f348d7..9c93175 100644
--- a/temp.c
+++ b/temp.c
@@ -297,9 +297,9 @@ void temp_sensor_tick() {
 			#endif
 			#define EWMA_SCALE  1024L
 			#define EWMA_ALPHA  ((long) (TEMP_EWMA * EWMA_SCALE))
-			temp_sensors_runtime[i].last_read_temp = (EWMA_ALPHA * temp +
+			temp_sensors_runtime[i].last_read_temp = (uint16_t) ((EWMA_ALPHA * temp +
 			  (EWMA_SCALE-EWMA_ALPHA) * temp_sensors_runtime[i].last_read_temp
-			                                         ) / EWMA_SCALE;
+			                                         ) / EWMA_SCALE);
 		}
 		if (labs((int16_t)(temp_sensors_runtime[i].last_read_temp - temp_sensors_runtime[i].target_temp)) < (TEMP_HYSTERESIS*4)) {
 			if (temp_sensors_runtime[i].temp_residency < (TEMP_RESIDENCY_TIME*120))