diff --git a/sys/dev/ata/chipsets/ata-siliconimage.c b/sys/dev/ata/chipsets/ata-siliconimage.c
index 85b0830c02c..081bee5b9a3 100644
--- a/sys/dev/ata/chipsets/ata-siliconimage.c
+++ b/sys/dev/ata/chipsets/ata-siliconimage.c
@@ -471,7 +471,8 @@ ata_siiprb_ch_attach(device_t dev)
     ch->hw.softreset = ata_siiprb_softreset;
     ch->hw.pm_read = ata_siiprb_pm_read;
     ch->hw.pm_write = ata_siiprb_pm_write;
-     
+    ch->flags |= ATA_NO_SLAVE;
+    ch->flags |= ATA_SATA;
     return 0;
 }