diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index f5b7c844c3..f9305fc42d 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -15,6 +15,8 @@ may have been fixed since this was written!
 * configure --disable-http is not fully supported. All other protocols seem
   to work to disable.
 
+* The -m parameter does not work when using telnet with curl on Windows.
+
 * If a HTTP server responds to a HEAD request and includes a body (thus
   violating the RFC2616), curl won't wait to read the response but just stop
   reading and return back. If a second request (let's assume a GET) is then