diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c
index 90ab8a2d2846..183c14329d6e 100644
--- a/drivers/iio/health/max30100.c
+++ b/drivers/iio/health/max30100.c
@@ -238,7 +238,7 @@ static irqreturn_t max30100_interrupt_handler(int irq, void *private)
 
 	mutex_lock(&data->lock);
 
-	while (cnt || (cnt = max30100_fifo_count(data) > 0)) {
+	while (cnt || (cnt = max30100_fifo_count(data)) > 0) {
 		ret = max30100_read_measurement(data);
 		if (ret)
 			break;