diff --git a/src/main/java/xyz/yooniks/exploitpatch/bukkit/ExploitPatchPlugin.java b/src/main/java/xyz/yooniks/exploitpatch/bukkit/ExploitPatchPlugin.java
index 00fab2d..4c7319f 100644
--- a/src/main/java/xyz/yooniks/exploitpatch/bukkit/ExploitPatchPlugin.java
+++ b/src/main/java/xyz/yooniks/exploitpatch/bukkit/ExploitPatchPlugin.java
@@ -36,8 +36,10 @@ public void onEnable() {
     final ConnectionCloser connectionCloser = new DefaultConnectionCloser(this);
 
     if (this.getConfig().getBoolean("arm-animation.enabled")) {
-      this.protocolManager.addPacketListener(new ArmAnimationListener(this,
-          this.getConfig().getLong("arm-animation.timestamp")));
+      final ArmAnimationListener armAnimationListener = new ArmAnimationListener(this,
+          this.getConfig().getLong("arm-animation.timestamp"));
+      this.protocolManager.addPacketListener(armAnimationListener);
+      this.getServer().getPluginManager().registerEvents(armAnimationListener, this);
     }
 
     this.protocolManager.addPacketListener(new ItemPacketListener(
diff --git a/src/main/java/xyz/yooniks/exploitpatch/bukkit/listener/ItemPacketListener.java b/src/main/java/xyz/yooniks/exploitpatch/bukkit/listener/ItemPacketListener.java
index 44601ad..ba5b6c2 100644
--- a/src/main/java/xyz/yooniks/exploitpatch/bukkit/listener/ItemPacketListener.java
+++ b/src/main/java/xyz/yooniks/exploitpatch/bukkit/listener/ItemPacketListener.java
@@ -28,6 +28,7 @@ public ItemPacketListener(Plugin plugin, ConnectionCloser connectionCloser, List
   public void onPacketReceiving(PacketEvent event) {
     final Player player = event.getPlayer();
     if (player == null || this.connectionCloser.isClosing(player)) {
+      event.setCancelled(true);
       return;
     }
     final PacketContainer packet = event.getPacket();
diff --git a/src/main/java/xyz/yooniks/exploitpatch/bukkit/nbt/NBTBigDataChecker.java b/src/main/java/xyz/yooniks/exploitpatch/bukkit/nbt/NBTBigDataChecker.java
index de528c2..81cd85d 100644
--- a/src/main/java/xyz/yooniks/exploitpatch/bukkit/nbt/NBTBigDataChecker.java
+++ b/src/main/java/xyz/yooniks/exploitpatch/bukkit/nbt/NBTBigDataChecker.java
@@ -24,6 +24,8 @@ public boolean isInvalid(ItemStack item) {
     return compound.getKeys().stream()
         .map(compound::getValue)
         .anyMatch(value -> value.getName().length() > 100
+            || (value.getValue() instanceof String && ((String) value.getValue()).length() > 100)
+            //not checking every tag in nbtlist =/ i hope it's not needed, cuz nbt has already some limit
             || (value instanceof NbtList && ((NbtList) value).size() > 55));
   }