diff --git a/c2me-opts-chunkio/src/main/java/com/ishland/c2me/opts/chunkio/mixin/compression/increase_buffer_size/MixinChunkStreamVersion.java b/c2me-opts-chunkio/src/main/java/com/ishland/c2me/opts/chunkio/mixin/compression/increase_buffer_size/MixinChunkStreamVersion.java
deleted file mode 100644
index 54fb8510..00000000
--- a/c2me-opts-chunkio/src/main/java/com/ishland/c2me/opts/chunkio/mixin/compression/increase_buffer_size/MixinChunkStreamVersion.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.ishland.c2me.opts.chunkio.mixin.compression.increase_buffer_size;
-
-import net.minecraft.world.storage.ChunkStreamVersion;
-import org.spongepowered.asm.mixin.Dynamic;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Redirect;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.zip.Deflater;
-import java.util.zip.DeflaterOutputStream;
-import java.util.zip.GZIPInputStream;
-import java.util.zip.GZIPOutputStream;
-import java.util.zip.Inflater;
-import java.util.zip.InflaterInputStream;
-
-@SuppressWarnings("InvalidInjectorMethodSignature")
-@Mixin(ChunkStreamVersion.class)
-public class MixinChunkStreamVersion {
-
-    @SuppressWarnings({"InvalidMemberReference", "MixinAnnotationTarget"})
-    @Dynamic
-    @Redirect(method = "<clinit>", at = @At(value = "NEW", target = "(ILnet/minecraft/world/storage/ChunkStreamVersion$Wrapper;Lnet/minecraft/world/storage/ChunkStreamVersion$Wrapper;)Lnet/minecraft/world/storage/ChunkStreamVersion;"))
-    private static ChunkStreamVersion redirectChunkStreamVersionConstructor(int id, ChunkStreamVersion.Wrapper<InputStream> inputStreamWrapper, ChunkStreamVersion.Wrapper<OutputStream> outputStreamWrapper) {
-        if (id == 1) { // GZIP
-            return new ChunkStreamVersion(id, in -> new GZIPInputStream(in, 16 * 1024), out -> new GZIPOutputStream(out, 16 * 1024));
-        } else if (id == 2) { // DEFLATE
-            return new ChunkStreamVersion(id, in -> new InflaterInputStream(in, new Inflater(), 16 * 1024), out -> new DeflaterOutputStream(out, new Deflater(), 16 * 1024));
-        } else if (id == 3) { // UNCOMPRESSED
-            return new ChunkStreamVersion(id, BufferedInputStream::new, BufferedOutputStream::new);
-        } else {
-            return new ChunkStreamVersion(id, inputStreamWrapper, outputStreamWrapper);
-        }
-    }
-
-}
diff --git a/c2me-opts-chunkio/src/main/resources/c2me-opts-chunkio.mixins.json b/c2me-opts-chunkio/src/main/resources/c2me-opts-chunkio.mixins.json
index a9e72a64..3024421f 100644
--- a/c2me-opts-chunkio/src/main/resources/c2me-opts-chunkio.mixins.json
+++ b/c2me-opts-chunkio/src/main/resources/c2me-opts-chunkio.mixins.json
@@ -4,7 +4,6 @@
   "package": "com.ishland.c2me.opts.chunkio.mixin",
   "plugin": "com.ishland.c2me.opts.chunkio.MixinPlugin",
   "mixins": [
-    "compression.increase_buffer_size.MixinChunkStreamVersion",
     "compression.modify_default_chunk_compression.MixinRegionFile",
     "hide_sync_disk_writes_behind_flag.MixinRegionBasedStorage",
     "limit_nbt_cache.MixinStorageIoWorker"