diff --git a/BossMod/AI/AIManager.cs b/BossMod/AI/AIManager.cs
index bc4ae86806..f9e7e9b10f 100644
--- a/BossMod/AI/AIManager.cs
+++ b/BossMod/AI/AIManager.cs
@@ -39,7 +39,7 @@ public void Dispose()
 
     public void Update()
     {
-        if (WorldState.Party.ContentIDs[_masterSlot] == 0)
+        if (WorldState.Party.ActorIDs[_masterSlot] == 0)
             SwitchToIdle();
 
         if (!_config.Enabled && _beh != null)