diff --git a/doc/todo/optimisations.mdwn b/doc/todo/optimisations.mdwn
index 0eb830cd0..40ffaf548 100644
--- a/doc/todo/optimisations.mdwn
+++ b/doc/todo/optimisations.mdwn
@@ -1,3 +1,5 @@
+Ikiwiki has already been optimised a lot, however..
+
 * Don't render blog archive pages unless a page is added/removed. Just
   changing a page doesn't affect the archives as they show only the title.