diff --git a/mac/README.mac b/mac/README.mac
index abe3a193..4b141e5a 100644
--- a/mac/README.mac
+++ b/mac/README.mac
@@ -4,7 +4,9 @@ Information about PuTTY for the Mac OS
 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 
 This is a port of PuTTY to the Classic Mac OS.  It is a work in
-progress and should be considered unfinished and insecure.  Unless you
+progress and should be considered unfinished and insecure.  It is
+not considered to be of release quality, even if you found it (and
+you're reading this) in a PuTTY release source archive.  Unless you
 know what you're doing, don't use it.
 
 Compiling it:
diff --git a/macosx/README.OSX b/macosx/README.OSX
index 24e29342..7076e0e7 100644
--- a/macosx/README.OSX
+++ b/macosx/README.OSX
@@ -1,9 +1,11 @@
 This directory contains a Mac OS X port of PuTTY/pterm, running as a
 native Aqua GUI application.
 
-THIS PORT IS CURRENTLY UNFINISHED AND EXPERIMENTAL. You are welcome
-to use it, but don't be surprised at unexpected behaviour. I'm not
-kidding.
+THIS PORT IS CURRENTLY UNFINISHED AND EXPERIMENTAL. It is _not_
+considered to be of release quality, even if you've found it (and
+are reading this) in a PuTTY release source archive. You are welcome
+to try using it, but don't be surprised at unexpected behaviour. I'm
+not kidding.
 
 In particular, I have not yet decided where OS X PuTTY should store
 its configuration data. Options include storing it in ~/.putty to be