diff --git a/src/main/java/xt9/deepmoblearning/common/events/EntityDeathHandler.java b/src/main/java/xt9/deepmoblearning/common/events/EntityDeathHandler.java
index fdeb604..6f7dd16 100644
--- a/src/main/java/xt9/deepmoblearning/common/events/EntityDeathHandler.java
+++ b/src/main/java/xt9/deepmoblearning/common/events/EntityDeathHandler.java
@@ -113,8 +113,11 @@ private static void handleMobDeath(LivingDeathEvent event) {
     }
 
     private static void cullEntityBlacklist() {
+        if (killedEntityUUIDBlacklist.isEmpty()) return;
+    
         UUID lastUUID = killedEntityUUIDBlacklist.get(killedEntityUUIDBlacklist.size() - 1);
-        killedEntityUUIDBlacklist.clear();
+    
+        killedEntityUUIDBlacklist = NonNullList.create();
         killedEntityUUIDBlacklist.add(lastUUID);
     }
 
@@ -200,7 +203,7 @@ private static NonNullList<ItemStack> updateAndReturnModels(ItemStack deepLearne
     }
 
     private static boolean isEntityBlacklisted(EntityLivingBase entityLiving) {
-        return killedEntityUUIDBlacklist.stream().filter(uuid -> uuid.toString().equals(entityLiving.getUniqueID().toString())).collect(Collectors.toList()).size() > 0;
+        return killedEntityUUIDBlacklist.contains(entityLiving.getUniqueID());
     }
 
     private static void attuneTrialKey(ItemStack trialKey, ItemStack dataModel, LivingDeathEvent event, EntityPlayerMP player) {