diff --git a/bme680.c b/bme680.c
index a8ed299..22c3a7e 100644
--- a/bme680.c
+++ b/bme680.c
@@ -924,7 +924,7 @@ static uint32_t calc_pressure(uint32_t pres_adc, const struct bme680_dev *dev)
 	var1 = ((32768 + var1) * (int32_t)dev->calib.par_p1) >> 15;
 	pressure_comp = 1048576 - pres_adc;
 	pressure_comp = (int32_t)((pressure_comp - (var2 >> 12)) * ((uint32_t)3125));
-	var4 = (int32_t)(((uint32_t)1) << 31);
+	var4 = (1 << 30);
 	if (pressure_comp >= var4)
 		pressure_comp = ((pressure_comp / (uint32_t)var1) << 1);
 	else