diff --git a/Contrib/NSISdl/ReadMe.txt b/Contrib/NSISdl/ReadMe.txt
index db98b436..09b40729 100644
--- a/Contrib/NSISdl/ReadMe.txt
+++ b/Contrib/NSISdl/ReadMe.txt
@@ -3,7 +3,8 @@ NSISdl 1.3 - HTTP downloading plugin for NSIS
 
 Copyright (C) 2001-2002 Yaroslav Faybishenko & Justin Frankel
 
-This plugin can be used from NSIS to download files via http.
+This plugin can be used from NSIS to download files via HTTP.
+Note: HTTPS is not supported, only plain HTTP!
 
 To connect to the internet, use the Dialer plugin.