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-rw-r--r--theories/ZArith/Zcomplements.v1
1 files changed, 1 insertions, 0 deletions
diff --git a/theories/ZArith/Zcomplements.v b/theories/ZArith/Zcomplements.v
index 78f537098..ccbad9de2 100644
--- a/theories/ZArith/Zcomplements.v
+++ b/theories/ZArith/Zcomplements.v
@@ -12,6 +12,7 @@ Require ZArith_base.
Require ZArithRing.
Require Omega.
Require Wf_nat.
+Import Z_scope.
(** Multiplication by a number >0 preserves [Zcompare]. It also perserves
[Zle], [Zlt], [Zge], [Zgt] *)