diff --git a/deploy.pl b/deploy.pl
index 6c964c9..5bf558b 100755
--- a/deploy.pl
+++ b/deploy.pl
@@ -103,6 +103,8 @@ sub render_vm_conf {
 		my $_disk_format = $vms{$vm_name}{'format'} || $conf{'conf'}{'FORMAT'};
 		my $_disk = $conf{'conf'}{'IMAGES'} . "/" . $_instance . "." . $_disk_format;
 		my $_disk2 = $conf{'conf'}{'IMAGES'} . "/" . $_instance . "_extra." . $_disk_format if $vms{$vm_name}{'disk2'};
+		$_disk_format = $_disk_format eq "img" ? "raw" : $_disk_format;
+
 		my $_owner = $vms{$vm_name}{'owner'} || $vms{$vm_name}{'username'};
 		my $_memory = $vms{$vm_name}{'memory'} || $conf{'conf'}{'MEMORY'};
 		my $_boot = $conf{'conf'}{'IMAGES'} . "/bsd.rd";