diff --git a/zzre/game/systems/npc/NPCScript.Execute.cs b/zzre/game/systems/npc/NPCScript.Execute.cs
index e7665583..c0dd0859 100644
--- a/zzre/game/systems/npc/NPCScript.Execute.cs
+++ b/zzre/game/systems/npc/NPCScript.Execute.cs
@@ -33,6 +33,7 @@ partial class NPCScript
     private const string CmdCreateDynamicItems = "_";
     private const string CmdRevive = "b";
     private const string CmdLookAtTrigger = "c";
+    private const string CmdIfTriggerIsEnabled = "d";
     private const string CmdPlaySound = "e";
     private const string CmdStartActorEffect = "g";
     private const string CmdEndActorEffect = "h";
@@ -87,6 +88,12 @@ protected override OpReturn Execute(in DefaultEcs.Entity entity, ref components.
                     ? OpReturn.Continue
                     : OpReturn.ConditionalSkip;
 
+            case CmdIfTriggerIsEnabled:
+                triggerI = int.Parse(args[0]);
+                return IfTriggerIsEnabled(entity, triggerI)
+                    ? OpReturn.Continue
+                    : OpReturn.ConditionalSkip;
+
             case CmdMoveSystem:
                 var waypointMode = Enum.Parse<messages.NPCMoveSystem.Mode>(args[0]);
                 var wpCategory = int.Parse(args[1]);
diff --git a/zzre/game/systems/npc/NPCScript.cs b/zzre/game/systems/npc/NPCScript.cs
index 36f07cdc..d2c29f2b 100644
--- a/zzre/game/systems/npc/NPCScript.cs
+++ b/zzre/game/systems/npc/NPCScript.cs
@@ -159,6 +159,12 @@ private bool IfTriggerIsActive(DefaultEcs.Entity entity, int triggerI)
             .Any();
     }
 
+    private bool IfTriggerIsEnabled(DefaultEcs.Entity entity, int triggerI)
+    {
+        Console.WriteLine("Warning unimplemented NPC instruction \"ifTriggerIsEnabled\"");
+        return false;
+    }
+
     private void MoveSystem(DefaultEcs.Entity entity, messages.NPCMoveSystem.Mode mode, int wpCategory)
     {
         World.Publish(new messages.NPCMoveSystem(entity, mode, wpCategory));