diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c
index ef06a897421ac4fdac4e042ffde1a4f7a56b7d6f..66a3b67019b8d92ef931d242cbbb266ae696d5d8 100644
--- a/drivers/iio/adc/ti-ads8688.c
+++ b/drivers/iio/adc/ti-ads8688.c
@@ -382,7 +382,7 @@ static irqreturn_t ads8688_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	/* Ensure naturally aligned timestamp */
-	u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)] __aligned(8);
+	u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)] __aligned(8) = { };
 	int i, j = 0;
 
 	for (i = 0; i < indio_dev->masklength; i++) {