diff --git a/external/libxmlsec/UnpackedTarball_xmlsec.mk b/external/libxmlsec/UnpackedTarball_xmlsec.mk
index 81600b96b719..e19c67c0b9d2 100644
--- a/external/libxmlsec/UnpackedTarball_xmlsec.mk
+++ b/external/libxmlsec/UnpackedTarball_xmlsec.mk
@@ -15,6 +15,8 @@ xmlsec_patches += xmlsec1-nssmangleciphers.patch.1
 xmlsec_patches += xmlsec1-noverify.patch.1
 xmlsec_patches += xmlsec1-mingw-keymgr-mscrypto.patch.1
 xmlsec_patches += xmlsec1-vc.patch.1
+# Upstreamed as <https://github.com/lsh123/xmlsec/commit/727f1d3f1fa9c23d6d356b233c6fa274b5dd7d71>.
+xmlsec_patches += xmlsec1-vs2015.patch.1
 xmlsec_patches += xmlsec1-1.2.14_fix_extern_c.patch.1
 xmlsec_patches += xmlsec1-customkeymanage.patch.1
 # Upstreamed as <https://github.com/lsh123/xmlsec/commit/7069e2b0ab49679008abedd6d223fb95538b0684>.
diff --git a/external/libxmlsec/xmlsec1-vc.patch.1 b/external/libxmlsec/xmlsec1-vc.patch.1
index bf35001b0da0..8c249e80c89b 100644
--- a/external/libxmlsec/xmlsec1-vc.patch.1
+++ b/external/libxmlsec/xmlsec1-vc.patch.1
@@ -10,45 +10,6 @@ Subject: [PATCH] xmlsec1-vc.patch
  win32/Makefile.msvc | 10 +++++++++-
  4 files changed, 12 insertions(+), 4 deletions(-)
 
-diff --git a/apps/cmdline.c b/apps/cmdline.c
-index b9ecafb..4425eaf 100644
---- a/apps/cmdline.c
-+++ b/apps/cmdline.c
-@@ -7,7 +7,7 @@
-  * 
-  * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>
-  */
--#if defined(_MSC_VER)
-+#if defined(_MSC_VER) && _MSC_VER < 1900
- #define snprintf _snprintf
- #endif
- 
-diff --git a/apps/crypto.c b/apps/crypto.c
-index 49dd127..f46eeee 100644
---- a/apps/crypto.c
-+++ b/apps/crypto.c
-@@ -7,7 +7,7 @@
-  * 
-  * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>
-  */
--#if defined(_MSC_VER)
-+#if defined(_MSC_VER) && _MSC_VER < 1900
- #define snprintf _snprintf
- #endif
- 
-diff --git a/apps/xmlsec.c b/apps/xmlsec.c
-index d551b5a..0467c25 100644
---- a/apps/xmlsec.c
-+++ b/apps/xmlsec.c
-@@ -9,7 +9,7 @@
- #include <string.h>
- #include <time.h>
- 
--#if defined(_MSC_VER)
-+#if defined(_MSC_VER) && _MSC_VER < 1900
- #define snprintf _snprintf
- #endif
- 
 diff --git a/win32/Makefile.msvc b/win32/Makefile.msvc
 index d833497..065595b 100644
 --- a/win32/Makefile.msvc
diff --git a/external/libxmlsec/xmlsec1-vs2015.patch.1 b/external/libxmlsec/xmlsec1-vs2015.patch.1
new file mode 100644
index 000000000000..53eacc053d36
--- /dev/null
+++ b/external/libxmlsec/xmlsec1-vs2015.patch.1
@@ -0,0 +1,46 @@
+From 56448979392d78a6e1688f61ce7bc771f38a880b Mon Sep 17 00:00:00 2001
+From: Miklos Vajna <vmiklos@collabora.co.uk>
+Date: Fri, 4 Mar 2016 16:12:29 +0100
+Subject: [PATCH] xmlsec1-vs2015.patch
+
+---
+
+diff --git a/apps/cmdline.c b/apps/cmdline.c
+index b9ecafb..4425eaf 100644
+--- a/apps/cmdline.c
++++ b/apps/cmdline.c
+@@ -7,7 +7,7 @@
+  * 
+  * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>
+  */
+-#if defined(_MSC_VER)
++#if defined(_MSC_VER) && _MSC_VER < 1900
+ #define snprintf _snprintf
+ #endif
+ 
+diff --git a/apps/crypto.c b/apps/crypto.c
+index 49dd127..f46eeee 100644
+--- a/apps/crypto.c
++++ b/apps/crypto.c
+@@ -7,7 +7,7 @@
+  * 
+  * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>
+  */
+-#if defined(_MSC_VER)
++#if defined(_MSC_VER) && _MSC_VER < 1900
+ #define snprintf _snprintf
+ #endif
+ 
+diff --git a/apps/xmlsec.c b/apps/xmlsec.c
+index d551b5a..0467c25 100644
+--- a/apps/xmlsec.c
++++ b/apps/xmlsec.c
+@@ -9,7 +9,7 @@
+ #include <string.h>
+ #include <time.h>
+ 
+-#if defined(_MSC_VER)
++#if defined(_MSC_VER) && _MSC_VER < 1900
+ #define snprintf _snprintf
+ #endif
+