diff --git a/drivers/ata/mtk_ahci.c b/drivers/ata/mtk_ahci.c
index 4ad260a..ac7fa49 100644
--- a/drivers/ata/mtk_ahci.c
+++ b/drivers/ata/mtk_ahci.c
@@ -124,5 +124,5 @@
 	.ofdata_to_platdata = mtk_ahci_ofdata_to_platdata,
 	.ops	= &scsi_ops,
 	.probe	= mtk_ahci_probe,
-	.priv_auto_alloc_size = sizeof(struct mtk_ahci_priv),
+	.priv_auto	= sizeof(struct mtk_ahci_priv),
 };