diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index 267198e..1b5b5bf 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -1168,7 +1168,6 @@ void ahci_init(AHCIState *s, DeviceState *qdev, int ports)
         ad->port_no = i;
         ad->port.dma = &ad->dma;
         ad->port.dma->ops = &ahci_dma_ops;
-        ad->port_regs.cmd = PORT_CMD_SPIN_UP | PORT_CMD_POWER_ON;
     }
 }
 
@@ -1193,6 +1192,7 @@ void ahci_reset(void *opaque)
         pr->irq_stat = 0;
         pr->irq_mask = 0;
         pr->scr_ctl = 0;
+        pr->cmd = PORT_CMD_SPIN_UP | PORT_CMD_POWER_ON;
         ahci_reset_port(&d->ahci, i);
     }
 }