diff --git a/INSTALL b/INSTALL
index d9153e93..c1770664 100644
--- a/INSTALL
+++ b/INSTALL
@@ -20,9 +20,12 @@ commonly used ones:
 
   --prefix        - Specifies the path where irssi will be installed.
                     YES, you can install irssi WITHOUT ROOT permissions
-		    by using --prefix=/home/dir
+                    by using --prefix=/home/dir
   --with-proxy    - Build the irssi proxy (see startup-HOWTO).
-  --enable-ipv6   - Enable IPv6 support.
+  --enable-ipv6   - Enable IPv6 support. If you want irssi to prefer
+                    IPv6 for hosts that have both v4 and v6 addresses,
+		    use /SET resolve_prefer_ipv6 ON. You can also override
+		    this with /SERVER -4 or -6 options.
 
 If GLib or ncurses is installed installed in a non-standard path you can
 specify it with --with-glib=/path and --with-ncurses=/path.