diff --git a/NewHorizons/Assets/vessel.newhorizons b/NewHorizons/Assets/vessel.newhorizons
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diff --git a/NewHorizons/Components/MaterialReplacer.cs b/NewHorizons/Components/MaterialReplacer.cs
index adf73001..64b383c1 100644
--- a/NewHorizons/Components/MaterialReplacer.cs
+++ b/NewHorizons/Components/MaterialReplacer.cs
@@ -7,6 +7,7 @@ namespace NewHorizons.Components
     /// <summary>
     /// Used by vessel asset bundle to change materials to the in-game ones.
     /// </summary>
+    [UsedInUnityProject]
     public class MaterialReplacer : MonoBehaviour
     {
         public string[] materialNames;
diff --git a/NewHorizons/Components/VesselOrbLocker.cs b/NewHorizons/Components/VesselOrbLocker.cs
index 34db1367..6b36b2b7 100644
--- a/NewHorizons/Components/VesselOrbLocker.cs
+++ b/NewHorizons/Components/VesselOrbLocker.cs
@@ -2,6 +2,7 @@ using UnityEngine;
 
 namespace NewHorizons.Components
 {
+    [UsedInUnityProject]
     public class VesselOrbLocker : MonoBehaviour
     {
         public GameObject _coordinateInterfaceOrbObject;
diff --git a/NewHorizons/Components/VesselSingularityRoot.cs b/NewHorizons/Components/VesselSingularityRoot.cs
index 2cca4481..fcfc3fab 100644
--- a/NewHorizons/Components/VesselSingularityRoot.cs
+++ b/NewHorizons/Components/VesselSingularityRoot.cs
@@ -2,6 +2,7 @@ using UnityEngine;
 
 namespace NewHorizons.Components
 {
+    [UsedInUnityProject]
     public class VesselSingularityRoot : MonoBehaviour
     {
     }
diff --git a/NewHorizons/UsedInUnityProjectAttribute.cs b/NewHorizons/UsedInUnityProjectAttribute.cs
new file mode 100644
index 00000000..057b3388
--- /dev/null
+++ b/NewHorizons/UsedInUnityProjectAttribute.cs
@@ -0,0 +1,7 @@
+using System;
+
+/// <summary>
+/// denotes that the given type is used in the unity project
+/// and therefore caution should be used when moving/renaming/deleting
+/// </summary>
+public class UsedInUnityProjectAttribute : Attribute { }
\ No newline at end of file