diff --git a/todo.txt b/todo.txt
index 5e3452b7f..fd16c6a27 100644
--- a/todo.txt
+++ b/todo.txt
@@ -54,3 +54,5 @@ TODO, which will get actually done
 - Debian: update, make it refresh DNS servers automatically.
 
 - XSDL: enable Ctrl/Alt/Shift and move them when mouse cursor is nearby.
+
+- SDL: add option for non-fullscreen non-immersive mode.