diff --git a/src/engine/gameManager/BuildingManager.java b/src/engine/gameManager/BuildingManager.java
index 78094707..a045c9f6 100644
--- a/src/engine/gameManager/BuildingManager.java
+++ b/src/engine/gameManager/BuildingManager.java
@@ -336,6 +336,26 @@ public enum BuildingManager {
 
         building.getHirelings().remove(hireling);
 
+        // Remove from zone mob set
+
+        if (hireling.getObjectType().equals(GameObjectType.Mob)) {
+
+            Mob hirelingMob = (Mob) hireling;
+
+            if (hirelingMob.getParentZone() != null)
+                hirelingMob.getParentZone().zoneMobSet.remove(hireling);
+
+        }
+
+        if (hireling.getObjectType().equals(GameObjectType.NPC)) {
+
+            NPC hirelingNPC = (NPC) hireling;
+
+            if (hirelingNPC.getParentZone() != null)
+                hirelingNPC.getParentZone().zoneNPCSet.remove(hireling);
+
+        }
+
         // Unload hireling from world
 
         DbManager.removeFromCache(hireling);