diff --git a/Docs/AcpiSamples/Source/SSDT-PNLFCFL.dsl b/Docs/AcpiSamples/Source/SSDT-PNLFCFL.dsl
index 076d8e13..6686daac 100644
--- a/Docs/AcpiSamples/Source/SSDT-PNLFCFL.dsl
+++ b/Docs/AcpiSamples/Source/SSDT-PNLFCFL.dsl
@@ -1,3 +1,6 @@
+// WARN: This file is deprecated and left for compatibility reasons.
+//       Please switch to SSDT-PNLF table if possible.
+//
 // Adding PNLF device for WhateverGreen.kext and others.
 // This one is specific to CFL+
 // Rename GFX0 to anything else if your IGPU name is different.