diff --git a/src/main/java/org/ultramine/server/UltramineServerModContainer.java b/src/main/java/org/ultramine/server/UltramineServerModContainer.java
index 3c8bf26..5cd56b6 100644
--- a/src/main/java/org/ultramine/server/UltramineServerModContainer.java
+++ b/src/main/java/org/ultramine/server/UltramineServerModContainer.java
@@ -21,6 +21,7 @@
 import org.ultramine.core.economy.service.EconomyRegistry;
 import org.ultramine.core.service.InjectService;
 import org.ultramine.core.service.ServiceManager;
+import org.ultramine.server.chunk.AntiXRayService;
 import org.ultramine.server.chunk.ChunkGenerationQueue;
 import org.ultramine.server.chunk.ChunkProfiler;
 import org.ultramine.server.chunk.alloc.ChunkAllocService;
@@ -111,6 +112,7 @@
 		try
 		{
 			services.register(ChunkAllocService.class, new UnsafeChunkAlloc(), 0);
+			services.register(AntiXRayService.class, new AntiXRayService.EmptyImpl(), 0);
 			if(e.getSide().isServer())
 			{
 				ConfigurationHandler.load();
diff --git a/src/main/java/org/ultramine/server/chunk/AntiXRayService.java b/src/main/java/org/ultramine/server/chunk/AntiXRayService.java
new file mode 100644
index 0000000..9a7570a
--- /dev/null
+++ b/src/main/java/org/ultramine/server/chunk/AntiXRayService.java
@@ -0,0 +1,26 @@
+package org.ultramine.server.chunk;
+
+import net.minecraft.world.chunk.Chunk;
+import org.ultramine.core.service.Service;
+
+@Service
+public interface AntiXRayService<T>
+{
+	T prepareChunkSync(ChunkSnapshot chunkSnapshot, Chunk chunk);
+
+	void prepareChunkAsync(ChunkSnapshot chunkSnapshot, T param);
+
+	class EmptyImpl implements AntiXRayService<Void>
+	{
+		@Override
+		public Void prepareChunkSync(ChunkSnapshot chunkSnapshot, Chunk chunk)
+		{
+			return null;
+		}
+
+		@Override
+		public void prepareChunkAsync(ChunkSnapshot chunkSnapshot, Void v)
+		{
+		}
+	}
+}
diff --git a/src/main/java/org/ultramine/server/chunk/ChunkSendManager.java b/src/main/java/org/ultramine/server/chunk/ChunkSendManager.java
index 01b7d1c..fb96078 100644
--- a/src/main/java/org/ultramine/server/chunk/ChunkSendManager.java
+++ b/src/main/java/org/ultramine/server/chunk/ChunkSendManager.java
@@ -18,6 +18,7 @@
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.ultramine.core.service.InjectService;
 import org.ultramine.server.WorldConstants;
 import org.ultramine.server.util.BlockFace;
 import org.ultramine.server.util.ChunkCoordComparator;
@@ -43,6 +44,7 @@
 {
 	private static final Logger log = LogManager.getLogger();
 	private static final ExecutorService executor = Executors.newFixedThreadPool(1);
+	@InjectService private static AntiXRayService<Object> antiXRayService;
 	private static final double MIN_RATE = 0.2d;
 	
 	private final EntityPlayerMP player;
@@ -460,11 +462,13 @@
 	{
 		private final ChunkIdStruct chunkId;
 		private final ChunkSnapshot chunkSnapshot;
-		
+		private final Object antiXRayParam;
+
 		public CompressAndSendChunkTask(ChunkIdStruct chunkId)
 		{
 			this.chunkId = chunkId;
 			this.chunkSnapshot = ChunkSnapshot.of(chunkId.chunk); // must be sync
+			this.antiXRayParam = antiXRayService.prepareChunkSync(this.chunkSnapshot, chunkId.chunk);
 		}
 		
 		private boolean checkActual()
@@ -488,6 +492,7 @@
 				return;
 			}
 
+			antiXRayService.prepareChunkAsync(chunkSnapshot, antiXRayParam);
 			S21PacketChunkData packet = S21PacketChunkData.makeForSend(chunkSnapshot); // may be async for chunk snapshot
 			packet.deflate(); // chunkSnapshot released here