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-rw-r--r--plugins/ltac/rewrite.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/plugins/ltac/rewrite.ml b/plugins/ltac/rewrite.ml
index 8acb29ba74..19866df8e3 100644
--- a/plugins/ltac/rewrite.ml
+++ b/plugins/ltac/rewrite.ml
@@ -1997,7 +1997,7 @@ let add_morphism_interactive atts m n : Lemmas.t =
let poly = atts.polymorphic in
let kind = Decl_kinds.DefinitionBody Decl_kinds.Instance in
let tac = make_tactic "Coq.Classes.SetoidTactics.add_morphism_tactic" in
- let hook _ _ _ = function
+ let hook { DeclareDef.Hook.S.dref; _ } = dref |> function
| Globnames.ConstRef cst ->
Classes.add_instance (Classes.mk_instance
(PropGlobal.proper_class env evd) Hints.empty_hint_info