diff --git a/todo.txt b/todo.txt
index a4b1163d7..86e2c0d54 100644
--- a/todo.txt
+++ b/todo.txt
@@ -19,6 +19,8 @@ TODO, which will get actually done
 
 - SDL: SD card permission dialog does nothing on Android 10.
 
+- SDL2: Back button does not work.
+
 - XSDL: use pixel size instead of video mode size, Android multiwindow support.
 
 - XSDL: proper window resizing, with xrandr resizing XSDL screen buffer.
@@ -39,10 +41,6 @@ TODO, which will get actually done
 
 - OpenLieroX: always dig while tapping Jump button, not just when in air.
 
-- SuperTux: worldmap is way laggy.
-
-- SuperTux: Back button does not work.
-
 - SuperTux: Level editor is unusable.
 
 - SuperTux: get_attrib_location() and get_uniform_location() should not be called for each render operation.