diff --git a/build-data/reobf-mappings-patch.tiny b/build-data/reobf-mappings-patch.tiny
index eb273c2e9a..347b2b8fdb 100644
--- a/build-data/reobf-mappings-patch.tiny
+++ b/build-data/reobf-mappings-patch.tiny
@@ -23,10 +23,6 @@ c	net/minecraft/world/level/chunk/LevelChunk	net/minecraft/world/level/chunk/Chu
 c	net/minecraft/server/level/ChunkMap	net/minecraft/server/level/PlayerChunkMap
 	f	Lnet/minecraft/server/level/ChunkMap$ChunkDistanceManager;	distanceManager	F
 
-# Paper changes type
-c	net/minecraft/core/MappedRegistry	net/minecraft/core/RegistryMaterials
-	f	Lit/unimi/dsi/fastutil/objects/Reference2IntOpenHashMap;	toId	e
-
 # The method is made public by Spigot, which then causes accidental overrides
 c	net/minecraft/world/entity/Entity	net/minecraft/world/entity/Entity
 	m	()Z	isInRain	isInRain0