diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c
index 59d7615c0f56..1aaa254aaf51 100644
--- a/drivers/iio/industrialio-gts-helper.c
+++ b/drivers/iio/industrialio-gts-helper.c
@@ -313,7 +313,7 @@ static int iio_gts_build_avail_scale_table(struct iio_gts *gts)
 	return 0;
 
 err_free_out:
-	for (i--; i; i--) {
+	for (i--; i >= 0; i--) {
 		kfree(per_time_scales[i]);
 		kfree(per_time_gains[i]);
 	}