diff --git a/UndertaleModLib/Models/UndertaleGeneralInfo.cs b/UndertaleModLib/Models/UndertaleGeneralInfo.cs
index e2cdb5524..fb502e56c 100644
--- a/UndertaleModLib/Models/UndertaleGeneralInfo.cs
+++ b/UndertaleModLib/Models/UndertaleGeneralInfo.cs
@@ -703,7 +703,8 @@ public enum OptionsFlags : ulong
         UseRearTouch = 0x2000000,
         UseFastCollision = 0x4000000,
         FastCollisionCompatibility = 0x8000000,
-        DisableSandbox = 0x10000000
+        DisableSandbox = 0x10000000,
+        EnableCopyOnWrite = 0x20000000
     }
 
     /// <summary>