diff --git a/TODO.md b/TODO.md
index 5c3fcfbe..2c02d453 100644
--- a/TODO.md
+++ b/TODO.md
@@ -11,7 +11,7 @@ https://zhuanlan.zhihu.com/p/39369370
   - [ ] Correctly implement `FreeHeightItemArranger::EnsureItemVisible`
 - [x] Change `GuiControl::Font` from `FontProperties` to `Nullable<FontProperties>`. It will changes following parent controls if it is set to null. If `GuiControlHost`'s font is null, it will become the default font.
 - [ ] Window Icon
-- [ ] Fix GacGen crash when defining an instance whose name conflicts with something from imported resources
+- [x] Fix GacGen crash when defining an instance whose name conflicts with something from imported resources
 - [ ] Fix GacGen reports only "error dumping resource file" while the resource file contains some syntax errors preventing GacGen from reading it
 - [ ] Fix hook mouse events in ButtonTemplate make GuiButton::Click not working
 - [x] Fix list control being able to scroll by mouse while there is no scroll bar