diff --git a/Config.mk b/Config.mk
index ddedeaab94..931df665ee 100644
--- a/Config.mk
+++ b/Config.mk
@@ -272,9 +272,9 @@ MINIOS_UPSTREAM_URL ?= git://xenbits.xen.org/mini-os.git
 endif
 OVMF_UPSTREAM_REVISION ?= 52a99493cce88a9d4ec8a02d7f1bd1a1001ce60d
 QEMU_UPSTREAM_REVISION ?= qemu-xen-4.7.0-rc1
-MINIOS_UPSTREAM_REVISION ?= e085b7e5613576601e2f100e6f1ee9e0778c3eb9
-# Sun Apr 10 00:46:32 2016 +0200
-# Fix time update
+MINIOS_UPSTREAM_REVISION ?= 4464673ccbfd12dcd0ec08cc29ca62cc12f6e61e
+# Mon May 2 13:55:00 2016 +0100
+# build: change MINI-OS_ROOT to MINIOS_ROOT
 
 SEABIOS_UPSTREAM_REVISION ?= rel-1.9.2
 # Tue, 1 Mar 2016 15:06:45 +0100 (16:06 +0200)