From e138fbf1e1cd95bfae05e17074f94a1ebde2edf8 Mon Sep 17 00:00:00 2001
From: Vincent Laporte
Date: Sat, 18 Jan 2020 20:35:42 +0100
Subject: firstorder: default tactic is “auto with core”

---
 theories/MSets/MSetPositive.v | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'theories/MSets')

diff --git a/theories/MSets/MSetPositive.v b/theories/MSets/MSetPositive.v
index a15b533d3d..4f2f4256e2 100644
--- a/theories/MSets/MSetPositive.v
+++ b/theories/MSets/MSetPositive.v
@@ -771,7 +771,7 @@ Module PositiveSet <: S with Module E:=PositiveOrderedTypeBits.
   Proof.
     unfold Exists, In. intro f.
     induction s as [|l IHl o r IHr]; intros i; simpl.
-     firstorder.
+     firstorder with bool.
      rewrite <- 2orb_lazy_alt, 2orb_true_iff, <- andb_lazy_alt, andb_true_iff.
      rewrite IHl, IHr. clear IHl IHr.
       split.
-- 
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