diff --git a/src/de/steamwar/spectatesystem/elements/REntity.java b/src/de/steamwar/spectatesystem/elements/REntity.java
index 8cf7765..39f7e36 100644
--- a/src/de/steamwar/spectatesystem/elements/REntity.java
+++ b/src/de/steamwar/spectatesystem/elements/REntity.java
@@ -101,7 +101,8 @@ public abstract class REntity {
 
     public void sneak(boolean sneaking) {
         entity.setSneaking(sneaking);
-        entity.getDataWatcher().register(new DataWatcherObject<>(0, DataWatcherRegistry.a), (byte)0x02);
+        entity.getDataWatcher().set(new DataWatcherObject<>(0, DataWatcherRegistry.a), (byte)0x02);
+        entity.getDataWatcher().markDirty(new DataWatcherObject<>(0, DataWatcherRegistry.a));
         PacketPlayOutEntityMetadata packet = new PacketPlayOutEntityMetadata(entity.getId(), entity.getDataWatcher(), false);
 
         for(Player player : Bukkit.getOnlinePlayers()){