diff --git a/virt/v2v/output_qemu.ml b/virt/v2v/output_qemu.ml

index be3a3c5..8b95f01 100644

--- a/v2v/output_qemu.ml

+++ b/v2v/output_qemu.ml

@@ -144,7 +144,7 @@ object

                           "media=disk"]

     | BusSlotRemovable { s_removable_type = CDROM } ->

-       arg_list "-drive" ["format=raw"; "if=" ^ if_name;

+       arg_list "-drive" ["if=" ^ if_name;

                           "index=" ^ string_of_int i; "media=cdrom"]

     | BusSlotRemovable { s_removable_type = Floppy } ->

@@ -242,9 +242,7 @@ object

       arg_list "-device" ["virtio-rng-pci"; "rng=rng0"];

     );

     if guestcaps.gcaps_virtio_balloon then

-      arg "-balloon" "virtio"

-    else

-      arg "-balloon" "none";

+      arg "-device" "virtio-balloon";

     if guestcaps.gcaps_isa_pvpanic then

       arg_list "-device" ["pvpanic"; "ioport=0x505"];