diff --git a/Submerged/Enums/CustomSystemTypes.cs b/Submerged/Enums/CustomSystemTypes.cs
index a0e8d62..3772b00 100644
--- a/Submerged/Enums/CustomSystemTypes.cs
+++ b/Submerged/Enums/CustomSystemTypes.cs
@@ -6,7 +6,7 @@ namespace Submerged.Enums;
 
 public readonly struct CustomSystemTypes
 {
-    public static void Initialize()
+    internal static void Initialize()
     {
         SystemTypeHelpers.AllTypes = SystemTypeHelpers.AllTypes.Concat(All.Select(t => t.systemType)).ToArray();
     }