diff --git a/src/main/java/com/falsepattern/endlessids/asm/ClassEdit.java b/src/main/java/com/falsepattern/endlessids/asm/ClassEdit.java
index 4a7b0e5..74bee09 100644
--- a/src/main/java/com/falsepattern/endlessids/asm/ClassEdit.java
+++ b/src/main/java/com/falsepattern/endlessids/asm/ClassEdit.java
@@ -9,7 +9,6 @@ import com.falsepattern.endlessids.asm.transformer.CofhBlockHelper;
 import com.falsepattern.endlessids.asm.transformer.FmlRegistry;
 import com.falsepattern.endlessids.asm.transformer.VanillaItemInWorldManager;
 import com.falsepattern.endlessids.asm.transformer.VanillaPlayerControllerMP;
-import com.falsepattern.endlessids.asm.transformer.VanillaS26PacketMapChunkBulk;
 import java.util.Map;
 
 public enum ClassEdit
@@ -25,7 +24,7 @@ public enum ClassEdit
     //VanillaS21PacketChunkData(new VanillaS21PacketChunkData(), new String[] { "net.minecraft.network.play.server.S21PacketChunkData" }),
     //VanillaS22PacketMultiBlockChange(new VanillaS22PacketMultiBlockChange(), new String[] { "net.minecraft.network.play.server.S22PacketMultiBlockChange" }),
     //VanillaS24PacketBlockActivation(new VanillaS24PacketBlockActivation(), new String[] { "net.minecraft.network.play.server.S24PacketBlockAction" }),
-    VanillaS26PacketMapChunkBulk(new VanillaS26PacketMapChunkBulk(), new String[] { "net.minecraft.network.play.server.S26PacketMapChunkBulk" }), 
+    //VanillaS26PacketMapChunkBulk(new VanillaS26PacketMapChunkBulk(), new String[] { "net.minecraft.network.play.server.S26PacketMapChunkBulk" }),
     //VanillaRenderGlobal(new VanillaRenderGlobal(), new String[] { "net.minecraft.client.renderer.RenderGlobal" }),
     VanillaPlayerControllerMP(new VanillaPlayerControllerMP(), new String[] { "net.minecraft.client.multiplayer.PlayerControllerMP" }), 
     VanillaItemInWorldManager(new VanillaItemInWorldManager(), new String[] { "net.minecraft.server.management.ItemInWorldManager" }), 
diff --git a/src/main/java/com/falsepattern/endlessids/asm/transformer/VanillaS26PacketMapChunkBulk.java b/src/main/java/com/falsepattern/endlessids/asm/transformer/VanillaS26PacketMapChunkBulk.java
deleted file mode 100644
index d2dba36..0000000
--- a/src/main/java/com/falsepattern/endlessids/asm/transformer/VanillaS26PacketMapChunkBulk.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.falsepattern.endlessids.asm.transformer;
-
-import org.objectweb.asm.tree.MethodNode;
-import com.falsepattern.endlessids.asm.AsmUtil;
-import com.falsepattern.endlessids.asm.Name;
-import org.objectweb.asm.tree.ClassNode;
-import com.falsepattern.endlessids.asm.IClassNodeTransformer;
-
-public class VanillaS26PacketMapChunkBulk implements IClassNodeTransformer
-{
-    public VanillaS26PacketMapChunkBulk() {
-        super();
-    }
-    
-    @Override
-    public void transform(final ClassNode cn, final boolean obfuscated) {
-        final MethodNode method = AsmUtil.findMethod(cn, Name.packet_readPacketData);
-        AsmUtil.transformInlinedSizeMethod(cn, method, 8192, 12288, false);
-    }
-}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/S26PacketMapChunkBulkMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/S26PacketMapChunkBulkMixin.java
new file mode 100644
index 0000000..e65c130
--- /dev/null
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/S26PacketMapChunkBulkMixin.java
@@ -0,0 +1,16 @@
+package com.falsepattern.endlessids.mixin.mixins.common;
+
+import net.minecraft.network.play.server.S26PacketMapChunkBulk;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+
+@Mixin(S26PacketMapChunkBulk.class)
+public abstract class S26PacketMapChunkBulkMixin {
+    @ModifyConstant(method = "readPacketData",
+                    constant = @Constant(intValue = 0x2000),
+                    require = 1)
+    private int extend1(int constant) {
+        return constant + 0x1000;
+    }
+}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java b/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
index cd1bb16..a66215e 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
@@ -19,6 +19,7 @@ public enum Mixin {
     S21PacketChunkDataMixin(builder(Side.COMMON).mixin("S21PacketChunkDataMixin")),
     S22PacketMultiBlockChangeMixin(builder(Side.COMMON).mixin("S22PacketMultiBlockChangeMixin")),
     S24PacketBlockActionMixin(builder(Side.COMMON).mixin("S24PacketBlockActionMixin")),
+    S26PacketMapChunkBulkMixin(builder(Side.COMMON).mixin("S26PacketMapChunkBulkMixin")),
     NetHandlerPlayClientMixin(builder(Side.CLIENT).mixin("NetHandlerPlayClientMixin")),
     RenderGlobalMixin(builder(Side.CLIENT).mixin("RenderGlobalMixin")),
     ;