diff --git a/TODO b/TODO
index a8297c31..7fe6fbce 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,11 @@
+- try:
+
+	$ vips copy k2.jpg k2.tif
+	$ vips im_copy k2.jpg k2.fits
+	$ vips copy k2.jpg k2.fits
+	** VIPS:ERROR:jpeg2vips.c:919:read_jpeg_generate: assertion failed: (r->top == jpeg->y_pos)
+	Aborted (core dumped)
+
 
 - threadpool recyling might be useful for dzsave?