diff --git a/src/main/java/com/atsuishio/superbwarfare/item/Monitor.java b/src/main/java/com/atsuishio/superbwarfare/item/Monitor.java
index fbcd73ddb..775f9627d 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/Monitor.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/Monitor.java
@@ -117,11 +117,15 @@ public class Monitor extends Item {
     @OnlyIn(Dist.CLIENT)
     @Override
     public void appendHoverText(ItemStack stack, Level world, List<Component> list, TooltipFlag flag) {
-        if (stack.getOrCreateTag().getString(LINKED_DRONE).equals("none")) return;
+        if (!stack.getOrCreateTag().contains(LINKED_DRONE) || stack.getOrCreateTag().getString(LINKED_DRONE).equals("none"))
+            return;
 
         Player player = Minecraft.getInstance().player;
         if (player == null) return;
 
+        if (!stack.getOrCreateTag().contains("PosX") || !stack.getOrCreateTag().contains("PosY") || !stack.getOrCreateTag().contains("PosZ"))
+            return;
+
         Vec3 droneVec = new Vec3(stack.getOrCreateTag().getDouble("PosX"), stack.getOrCreateTag().getDouble("PosY"), stack.getOrCreateTag().getDouble("PosZ"));
 
         list.add(Component.translatable("des.superbwarfare.monitor", new DecimalFormat("##.#").format(player.position().distanceTo(droneVec)) + "m").withStyle(ChatFormatting.GRAY));