diff --git a/TODO.markdown b/TODO.markdown
index 46d679ab..6198381a 100644
--- a/TODO.markdown
+++ b/TODO.markdown
@@ -7,7 +7,7 @@
     * sign
     * verify
 * Use BIND10 memory efficient zone structure?
-* make more use of io.Reader/io.Writer
+* copy srv/mx sorting from base library
 
 ## Nice to have