diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/techhider/TechHider.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/techhider/TechHider.java
index b06959c2..1f749c9e 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/techhider/TechHider.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/techhider/TechHider.java
@@ -83,7 +83,7 @@ public class TechHider {
         techhiders.put(multiBlockChangePacket, ProtocolWrapper.impl.multiBlockChangeGenerator(this));
         techhiders.put(ChunkHider.impl.mapChunkPacket(), ChunkHider.impl.chunkHiderGenerator(this));
 
-        if(Core.getVersion() > 12) {
+        if(Core.getVersion() > 12 && Core.getVersion() < 19 || Core.getVersion() >= 21) {
             Class<?> blockBreakClass = Reflection.getClass("net.minecraft.network.protocol.game.ClientboundBlockDestructionPacket");
             BiFunction<Player, Object, Object> blockBreakHider = ProtocolWrapper.impl.blockBreakHiderGenerator(blockBreakClass, this);
             if(blockBreakHider != null)