diff --git a/todo.md b/todo.md
index 083f03f..3d0e35d 100644
--- a/todo.md
+++ b/todo.md
@@ -40,6 +40,7 @@ important things:
 - sometimes the size of the drop-down part of a Combobox becomes 0 or 1 or some other impossibly small value on Windows
 - make gcc (Unix)/clang (Mac OS X) pedantic about warnings/errors; also -Werror
 - make sure scrollbars in Listbox work identically on all platforms (specifically the existence and autohiding of both horizontal and vertical scrollbars)
+- GTK+ windows cannot be resized smaller than their controls's current sizes in their current positions; find out how to overrule that so they can be freely resized
 
 super ultra important things:
 - the windows build appears to be unstable: