diff --git a/TODO b/TODO
index 3b8394831..3d037f1f8 100644
--- a/TODO
+++ b/TODO
@@ -114,6 +114,7 @@
 	* drag panes and windows around to move/swap them in choose mode
 	* flag to specify environment to new-window, split-window,
           new-session (issue 1498)
+	* multiple column panes (issue 1503)
 
 - hooks
 	* more hooks for various things