diff --git a/README b/README
index 05b0b1dcb..658f07ae0 100644
--- a/README
+++ b/README
@@ -16,7 +16,7 @@ This is Linphone, a free (GPL) video softphone based on the SIP protocol.
 		- libswscale (part of ffmpeg too) for better scaling performance
 		- theora (optional)
 	+ if you want uPnP support:
-		- libupnp
+		- libupnp (version 1.6 branch (not patched with 18-url-upnpstrings.patch))
 
 with their corresponding -dev or -devel package if you don't use source packages.