diff --git a/miniupnpc/minisoap.c b/miniupnpc/minisoap.c
index e45a481..f120fe5 100644
--- a/miniupnpc/minisoap.c
+++ b/miniupnpc/minisoap.c
@@ -1,7 +1,7 @@
-/* $Id: minisoap.c,v 1.22 2012/01/21 13:30:31 nanard Exp $ */
+/* $Id: minisoap.c,v 1.23 2014/11/04 22:31:55 nanard Exp $ */
 /* Project : miniupnp
  * Author : Thomas Bernard
- * Copyright (c) 2005-2012 Thomas Bernard
+ * Copyright (c) 2005-2014 Thomas Bernard
  * This software is subject to the conditions detailed in the
  * LICENCE file provided in this distribution.
  *
@@ -96,7 +96,7 @@ int soapPostSubmit(int fd,
 	headerssize = snprintf(headerbuf, sizeof(headerbuf),
                        "POST %s HTTP/%s\r\n"
 	                   "Host: %s%s\r\n"
-					   "User-Agent: " OS_STRING ", UPnP/1.0, MiniUPnPc/" MINIUPNPC_VERSION_STRING "\r\n"
+					   "User-Agent: " OS_STRING ", " UPNP_VERSION_STRING ", MiniUPnPc/" MINIUPNPC_VERSION_STRING "\r\n"
 	                   "Content-Length: %d\r\n"
 					   "Content-Type: text/xml\r\n"
 					   "SOAPAction: \"%s\"\r\n"
diff --git a/miniupnpc/miniupnpcstrings.h.cmake b/miniupnpc/miniupnpcstrings.h.cmake
index 236b2dc..78c8fe9 100644
--- a/miniupnpc/miniupnpcstrings.h.cmake
+++ b/miniupnpc/miniupnpcstrings.h.cmake
@@ -4,4 +4,12 @@
 #define OS_STRING "${CMAKE_SYSTEM_NAME}"
 #define MINIUPNPC_VERSION_STRING "${MINIUPNPC_VERSION}"
 
+#if 0
+/* according to "UPnP Device Architecture 1.0" */
+#define UPNP_VERSION_STRING "UPnP/1.0"
+#else
+/* according to "UPnP Device Architecture 1.1" */
+#define UPNP_VERSION_STRING "UPnP/1.1"
+#endif
+
 #endif
diff --git a/miniupnpc/miniupnpcstrings.h.in b/miniupnpc/miniupnpcstrings.h.in
index 93b8cbc..68bf429 100644
--- a/miniupnpc/miniupnpcstrings.h.in
+++ b/miniupnpc/miniupnpcstrings.h.in
@@ -1,8 +1,8 @@
-/* $Id: miniupnpcstrings.h.in,v 1.4 2011/01/04 11:41:53 nanard Exp $ */
+/* $Id: miniupnpcstrings.h.in,v 1.6 2014/11/04 22:31:55 nanard Exp $ */
 /* Project: miniupnp
  * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
  * Author: Thomas Bernard
- * Copyright (c) 2005-2011 Thomas Bernard
+ * Copyright (c) 2005-2014 Thomas Bernard
  * This software is subjects to the conditions detailed
  * in the LICENCE file provided within this distribution */
 #ifndef MINIUPNPCSTRINGS_H_INCLUDED
@@ -11,5 +11,13 @@
 #define OS_STRING "OS/version"
 #define MINIUPNPC_VERSION_STRING "version"
 
+#if 0
+/* according to "UPnP Device Architecture 1.0" */
+#define UPNP_VERSION_STRING "UPnP/1.0"
+#else
+/* according to "UPnP Device Architecture 1.1" */
+#define UPNP_VERSION_STRING "UPnP/1.1"
+#endif
+
 #endif
 
diff --git a/miniupnpc/miniwget.c b/miniupnpc/miniwget.c
index 4a4a939..6c3915b 100644
--- a/miniupnpc/miniwget.c
+++ b/miniupnpc/miniwget.c
@@ -1,4 +1,4 @@
-/* $Id: miniwget.c,v 1.61 2014/02/05 17:27:48 nanard Exp $ */
+/* $Id: miniwget.c,v 1.65 2014/11/04 22:31:55 nanard Exp $ */
 /* Project : miniupnp
  * Website : http://miniupnp.free.fr/
  * Author : Thomas Bernard
@@ -368,7 +368,7 @@ miniwget3(const char * host,
                  "GET %s HTTP/%s\r\n"
 			     "Host: %s:%d\r\n"
 				 "Connection: Close\r\n"
-				 "User-Agent: " OS_STRING ", UPnP/1.0, MiniUPnPc/" MINIUPNPC_VERSION_STRING "\r\n"
+				 "User-Agent: " OS_STRING ", " UPNP_VERSION_STRING ", MiniUPnPc/" MINIUPNPC_VERSION_STRING "\r\n"
 
 				 "\r\n",
 			   path, httpversion, host, port);