--- a/net/minecraft/world/entity/animal/horse/EntityLlamaTrader.java
+++ b/net/minecraft/world/entity/animal/horse/EntityLlamaTrader.java
@@ -152,7 +152,7 @@
 
         @Override
         public void c() {
-            this.mob.setGoalTarget(this.ownerLastHurtBy);
+            this.mob.setGoalTarget(this.ownerLastHurtBy, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_ATTACKED_OWNER, true); // CraftBukkit
             Entity entity = this.llama.getLeashHolder();
 
             if (entity instanceof EntityVillagerTrader) {
