diff --git a/Config.mk b/Config.mk
index 57d3e2bc44..54f2382335 100644
--- a/Config.mk
+++ b/Config.mk
@@ -274,7 +274,7 @@ MINIOS_UPSTREAM_URL ?= git://xenbits.xen.org/mini-os.git
 endif
 OVMF_UPSTREAM_REVISION ?= 947f3737abf65fda63f3ffd97fddfa6986986868
 QEMU_UPSTREAM_REVISION ?= master
-MINIOS_UPSTREAM_REVISION ?= d991bdbc062248221511ecb795617c36b37e1d2e
+MINIOS_UPSTREAM_REVISION ?= 1fb40dd678f1afd0b7e1a5c37b7c5e54547e7ae3
 # Wed Aug 9 13:15:48 2017 +0100
 # lib/math.c: implement __udivmoddi4