diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index e398df12fd18a2838363ca5144ae16b3fdc28860..8824c8da3f2f88abea82ab1de951313ef811bf76 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1268,7 +1268,7 @@ u64 ata_tf_to_lba48(const struct ata_taskfile *tf)
 
 	sectors |= ((u64)(tf->hob_lbah & 0xff)) << 40;
 	sectors |= ((u64)(tf->hob_lbam & 0xff)) << 32;
-	sectors |= (tf->hob_lbal & 0xff) << 24;
+	sectors |= ((u64)(tf->hob_lbal & 0xff)) << 24;
 	sectors |= (tf->lbah & 0xff) << 16;
 	sectors |= (tf->lbam & 0xff) << 8;
 	sectors |= (tf->lbal & 0xff);