diff --git a/external/corefx b/external/corefx
index b79e6eab98c1..48ab4ab76868 160000
--- a/external/corefx
+++ b/external/corefx
@@ -1 +1 @@
-Subproject commit b79e6eab98c1baed478c738eaf95a1f6ee7f6d98
+Subproject commit 48ab4ab768681f69856a5106877f0b4e49644d95
diff --git a/mcs/class/Facades/System.Drawing.Common/Makefile b/mcs/class/Facades/System.Drawing.Common/Makefile
index 71ad4c3ddb26..2c9b19c6979e 100644
--- a/mcs/class/Facades/System.Drawing.Common/Makefile
+++ b/mcs/class/Facades/System.Drawing.Common/Makefile
@@ -13,7 +13,7 @@ KEYFILE = ../../Open.snk
 LIBRARY_SNK = $(KEYFILE)
 SIGN_FLAGS = /delaysign /nowarn:1616,1699
 LIB_REFS = System
-LIB_MCS_FLAGS = $(SIGN_FLAGS) $(EXTRA_LIB_MCS_FLAGS)
+LIB_MCS_FLAGS = $(SIGN_FLAGS) $(EXTRA_LIB_MCS_FLAGS) -d:FEATURE_TYPECONVERTER
 
 ifneq (,$(filter build net_4_x, $(PROFILE)))
 $(error This profile shouldn't build System.Drawing.Common.dll, it already has System.Drawing.dll)