diff --git a/Component/PostRenderHook.cs b/Component/PostRenderHook.cs
index dacebe9..b13aac9 100644
--- a/Component/PostRenderHook.cs
+++ b/Component/PostRenderHook.cs
@@ -1,3 +1,4 @@
+using System.Reflection;
 using HarmonyLib;
 using UnityEngine;
 
@@ -6,9 +7,16 @@ namespace ADOFAIRenderer.Component
     [DefaultExecutionOrder(int.MaxValue)]
     public class PostRenderHook : MonoBehaviour
     {
+        private FieldInfo? _camQuadMeshField;
+
+        private void Awake()
+        {
+            _camQuadMeshField = AccessTools.Field(typeof(scrCamera), "camQuadMesh");
+        }
+        
         private void LateUpdate()
         {
-            var val = (MeshRenderer)AccessTools.Field(typeof(scrCamera), "camQuadMesh").GetValue(scrCamera.instance);
+            var val = (MeshRenderer)_camQuadMeshField!.GetValue(scrCamera.instance);
             RenderMod.OnPostRender(val.material.mainTexture as RenderTexture);
         }
     }