diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index 18eb2955cc217..faaf711325b52 100644
--- a/drivers/iio/adc/qcom-spmi-vadc.c
+++ b/drivers/iio/adc/qcom-spmi-vadc.c
@@ -101,7 +101,7 @@
 #define KELVINMIL_CELSIUSMIL			273150
 
 #define PMI_CHG_SCALE_1				-138890
-#define PMI_CHG_SCALE_2				391750000000
+#define PMI_CHG_SCALE_2				391750000000LL
 
 #define VADC_CHAN_MIN			VADC_USBIN
 #define VADC_CHAN_MAX			VADC_LR_MUX3_BUF_PU1_PU2_XO_THERM