diff --git a/src/scsi/scsi_aha154x.c b/src/scsi/scsi_aha154x.c
index 049864686..d904cb171 100644
--- a/src/scsi/scsi_aha154x.c
+++ b/src/scsi/scsi_aha154x.c
@@ -657,7 +657,6 @@ aha_reset(aha_t *dev)
     dev->MailboxIsBIOS = 0;
     dev->BIOSMailboxCount = 0;
     dev->BIOSMailboxOutPosCur = 0;
-    dev->BIOSMailboxOutInterrupts = 0;
 
     clear_irq(dev);
 }