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-rw-r--r--theories/Program/Tactics.v2
1 files changed, 1 insertions, 1 deletions
diff --git a/theories/Program/Tactics.v b/theories/Program/Tactics.v
index eb5c7cc11..fff78a85a 100644
--- a/theories/Program/Tactics.v
+++ b/theories/Program/Tactics.v
@@ -93,7 +93,7 @@ Ltac clear_dup :=
| [ H' : ?Y |- _ ] =>
match H with
| H' => fail 2
- | _ => conv X Y ; (clear H' || clear H)
+ | _ => unify X Y ; (clear H' || clear H)
end
end
end.