commit 2d10bc7c2d75027dec11770a201469ddb16fe455
Author: Roger Pueyo Centelles <roger.pueyo@guifi.net>
Date:   Tue Apr 29 16:25:21 2014 +0200

    Changed vbox in targets.mk to generate the VirtualBox image

diff --git a/targets.mk b/targets.mk
index 2603817..181c3e5 100644
--- a/targets.mk
+++ b/targets.mk
@@ -251,8 +251,7 @@ ifeq ($(T),vbox)
   ARCH:=x86
   TBUILD:=openwrt
   PROFILE:=vm-qmp-big-node
-  IMAGE:=bin/$(ARCH)/openwrt-x86-generic-combined-ext4.vdi
-  SYSUPGRADE:=bin/$(ARCH)/openwrt-x86-generic-combined-ext4.vdi
+  IMAGE:=bin/$(ARCH)/openwrt-x86-generic-combined-ext4.img.gz
 endif
 
 ifeq ($(T),vmware)