diff --git a/Assets/Portal/Runtime/PortalCamera.cs b/Assets/Portal/Runtime/PortalCamera.cs
index 3304e01..e420eac 100644
--- a/Assets/Portal/Runtime/PortalCamera.cs
+++ b/Assets/Portal/Runtime/PortalCamera.cs
@@ -31,15 +31,11 @@ namespace EscapeRoomEngine.Portal.Runtime
         /// </summary>
         [SerializeField] public MeshRenderer screen;
 
-        private Player _player;
         private Camera _camera;
         private readonly Dictionary<Camera.StereoscopicEye, RenderTexture> _textures = new();
 
         private void Awake()
         {
-            // get player camera
-            _player = Player.Instance;
-            
             // get portal camera
             _camera = GetComponent<Camera>();
         }
@@ -59,7 +55,7 @@ namespace EscapeRoomEngine.Portal.Runtime
         private void Render(ScriptableRenderContext scriptableRenderContext, Camera _)
         {
             // check whether the portal plane is visible from the player camera
-            var frustumPlanes = GeometryUtility.CalculateFrustumPlanes(_player.camera);
+            var frustumPlanes = GeometryUtility.CalculateFrustumPlanes(Player.Instance.camera);
             if (!GeometryUtility.TestPlanesAABB(frustumPlanes, portal.linkedPortal.portalCamera.screen.bounds))
                 // don't render this portal if it is not visible
                 return;
@@ -84,9 +80,9 @@ namespace EscapeRoomEngine.Portal.Runtime
                 // position portal camera
                 var m = portal.portalTransform.localToWorldMatrix * Portal.HalfRotation *
                         portal.linkedPortal.portalTransform.worldToLocalMatrix *
-                        _player.GetEye(eye).localToWorldMatrix;
+                        Player.Instance.GetEye(eye).localToWorldMatrix;
                 transform.SetPositionAndRotation(m.GetPosition(), m.rotation);
-                _camera.projectionMatrix = _player.camera.GetStereoProjectionMatrix(eye);
+                _camera.projectionMatrix = Player.Instance.camera.GetStereoProjectionMatrix(eye);
         
                 // set camera clip plane to portal (otherwise the wall behind the portal would be rendered)
                 // calculating the clip plane: https://computergraphics.stackexchange.com/a/1506