diff --git a/compiler/deSugar/DsBinds.hs b/compiler/deSugar/DsBinds.hs
index 6498ed7f6f2d694ffba60ba1217378959b63286e..20a3b23e96d6e781d7f5bce8a0ddb2b8a2486d66 100644
--- a/compiler/deSugar/DsBinds.hs
+++ b/compiler/deSugar/DsBinds.hs
@@ -1073,12 +1073,6 @@ simplOptExpr occurrence-analyses and simplifies the LHS:
        otherwise we don't match when given an argument like
           augment (\a. h a a) (build h)
 
-Note [Matching seqId]
-~~~~~~~~~~~~~~~~~~~
-The desugarer turns (seq e r) into (case e of _ -> r), via a special-case hack
-and this code turns it back into an application of seq!
-See Note [Rules for seq] in MkId for the details.
-
 Note [Unused spec binders]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 Consider