diff --git a/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs b/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
index 76ae5be3b12858b84e0592e8ea29cee7bf1623c1..9f28d72a3270d014fffc1657ce0dc96102b818e9 100644
--- a/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
+++ b/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
@@ -269,6 +269,7 @@ classify tok =
     ITequal                -> TkGlyph
     ITlam                  -> TkGlyph
     ITlcase                -> TkGlyph
+    ITlcases               -> TkGlyph
     ITvbar                 -> TkGlyph
     ITlarrow            {} -> TkGlyph
     ITrarrow            {} -> TkGlyph