diff --git a/_dist/README.txt b/_dist/README.txt
index 8fb45dc..ae78c14 100644
--- a/_dist/README.txt
+++ b/_dist/README.txt
@@ -52,6 +52,7 @@ NMDC's smaller community has standardised around comparatively few protocol impl
 - HoloIRC - Can't parse client tag, upstream bug https://github.com/tilal6991/HoloIRC/issues/140
 - AndChat - Duplicate usernames appear, upstream bug https://github.com/znc/znc/issues/424
 - Irssi - Ignorable warning "critical nicklist_set_host: assertion 'host != NULL' failed"
+- mIRC 7 - Doesn't understand PRIVMSG with blank sender, causing upstream system messages to instead appear in the Server window
 
 [b]Unusable:[/b]
 - Yaaic - doesn't properly understand/parse the room join