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-rw-r--r--theories/Numbers/Integer/Binary/ZBinary.v1
1 files changed, 1 insertions, 0 deletions
diff --git a/theories/Numbers/Integer/Binary/ZBinary.v b/theories/Numbers/Integer/Binary/ZBinary.v
index 6a2745d345..cf3986b724 100644
--- a/theories/Numbers/Integer/Binary/ZBinary.v
+++ b/theories/Numbers/Integer/Binary/ZBinary.v
@@ -35,6 +35,7 @@ Qed.
(** Basic operations. *)
Instance eq_equiv : Equivalence (@eq Z).
+Local Obligation Tactic := simpl_relation.
Program Instance succ_wd : Proper (eq==>eq) Zsucc.
Program Instance pred_wd : Proper (eq==>eq) Zpred.
Program Instance add_wd : Proper (eq==>eq==>eq) Zplus.