diff --git a/src/engine/ai/MobileFSM.java b/src/engine/ai/MobileFSM.java
index 04124152..983fed19 100644
--- a/src/engine/ai/MobileFSM.java
+++ b/src/engine/ai/MobileFSM.java
@@ -564,7 +564,9 @@ public class MobileFSM {
             return;
         }
         //add default behaviour type
-            mob.BehaviourType = MobBehaviourType.Aggro;
+            if(mob.BehaviourType == null){
+                mob.BehaviourType = MobBehaviourType.Simple;
+            }
         if (mob.isAlive() == false) {
             //no need to continue if mob is dead, check for respawn and move on
             CheckForRespawn(mob);