diff --git a/TODO b/TODO
index ebbd8c6d..d8dfc955 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,10 @@
+- this seems to not work:
+
+	$ vips copy k2.jpg x.dz[suffix=.jpg[Q=90]]
+	dzsave: not , or ) after parameter
+
+- add n_pages to pdfload
+
 - add more webp tests to py suite
 
 - the gif tests in the suite sometimes fail with giflib5 because of an