diff --git a/providers/virtualbox/manifest.py b/providers/virtualbox/manifest.py
index 9fd495c..a5beb54 100644
--- a/providers/virtualbox/manifest.py
+++ b/providers/virtualbox/manifest.py
@@ -10,7 +10,6 @@ class Manifest(base.Manifest):
 
 	def parse(self, data):
 		super(Manifest, self).parse(data)
-		self.virtualization = data['virtualization']
 		self.image          = data['image']
 		if 'loopback_dir' not in self.volume and self.volume['backing'].lower() == 's3':
 			self.volume['loopback_dir'] = '/tmp'
diff --git a/providers/virtualbox/tasks/boot.py b/providers/virtualbox/tasks/boot.py
index 3bbfda5..97e9367 100644
--- a/providers/virtualbox/tasks/boot.py
+++ b/providers/virtualbox/tasks/boot.py
@@ -38,10 +38,3 @@ class ConfigureGrub(Task):
 		                info.bootstrap_device['partitions']['root_path']])
 
 		log_check_call(['/usr/sbin/chroot', info.root, '/usr/sbin/update-grub'])
-
-		from common.tools import sed_i
-		if info.manifest.virtualization == 'virtio':
-			grub_cfg = os.path.join(info.root, 'boot/grub/grub.cfg')
-			sed_i(grub_cfg, 'sda', 'vda')
-			device_map = os.path.join(info.root, 'boot/grub/device.map')
-			sed_i(device_map, 'sda', 'vda')