diff --git a/docs/bugs_and_glitches.md b/docs/bugs_and_glitches.md
index 94fc4314d9..ce06c14898 100644
--- a/docs/bugs_and_glitches.md
+++ b/docs/bugs_and_glitches.md
@@ -1,7 +1,7 @@
 
 # Bugs and Glitches
 
-These are known bugs and glitches in the original Pokémon Emerald game: code that clearly does not work as intended, or that only works in limited circumstances but has the possibility to fail or crash. Defining the `BUGFIX` preprocessor variable will fix some of these automatically.
+These are known bugs and glitches in the original Pokémon Emerald game: code that clearly does not work as intended, or that only works in limited circumstances but has the possibility to fail or crash. Defining the `BUGFIX` and `UBFIX` preprocessor variables will fix some of these automatically. `UBFIX` will already be defined for MODERN builds.
 
 Fixes are written in the `diff` format. If you've used Git before, this should look familiar:
 
@@ -49,21 +49,3 @@ Then edit `BagMenu_MoveCursorCallback` in [src/item_menu.c](https://github.com/p
 	if (itemIndex != LIST_CANCEL)
 	...
 ```
-
-## Pokémon that have an affine transform as part of their entry animation glitch when going in and out of Poké Balls without a screen transition in between
-
-**Fix:** Edit `sub_817F77C` in [src/pokemon_animation.c](https://github.com/pret/pokeemerald/blob/master/src/pokemon_animation.c#L1028):
-
-```diff
-    ...
--#ifdef BUGFIX
-    else
-    {
-        // FIX: Reset these back to normal after they were changed so Poké Ball catch/release
-        // animations without a screen transition in between don't break
-        sprite->affineAnimPaused = FALSE;
-        sprite->affineAnims = gUnknown_082FF694;
-    }
--#endif // BUGFIX
-}
-```