diff --git a/sys/dev/ata/ata-queue.c b/sys/dev/ata/ata-queue.c
index c8ae79dce69..7085460c6c1 100644
--- a/sys/dev/ata/ata-queue.c
+++ b/sys/dev/ata/ata-queue.c
@@ -434,7 +434,8 @@ ata_completed(void *context, int dummy)
 		printf("\n");
 	}
 
-	if ((request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ?
+	if (!request->result &&
+	     (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ?
 	     request->u.atapi.sense.key & ATA_SENSE_KEY_MASK : 
 	     request->error))
 	    request->result = EIO;