diff --git a/Penumbra/UI/AdvancedWindow/Materials/MtrlTab.cs b/Penumbra/UI/AdvancedWindow/Materials/MtrlTab.cs
index e15d1c90..2c7c889e 100644
--- a/Penumbra/UI/AdvancedWindow/Materials/MtrlTab.cs
+++ b/Penumbra/UI/AdvancedWindow/Materials/MtrlTab.cs
@@ -216,7 +216,7 @@ public sealed partial class MtrlTab : IWritable, IDisposable
     }
 
     public bool Valid
-        => _shadersKnown && Mtrl.Valid;
+        => Mtrl.Valid; // FIXME This should be _shadersKnown && Mtrl.Valid but the algorithm for _shadersKnown is flawed as of 7.2.
 
     public byte[] Write()
     {