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-rw-r--r--theories/Numbers/Integer/Abstract/ZAdd.v2
1 files changed, 1 insertions, 1 deletions
diff --git a/theories/Numbers/Integer/Abstract/ZAdd.v b/theories/Numbers/Integer/Abstract/ZAdd.v
index 0c097b6773..9d9244eefb 100644
--- a/theories/Numbers/Integer/Abstract/ZAdd.v
+++ b/theories/Numbers/Integer/Abstract/ZAdd.v
@@ -18,7 +18,7 @@ Include ZBaseProp Z.
(** Theorems that are either not valid on N or have different proofs
on N and Z *)
-Hint Rewrite opp_0 : nz.
+Global Hint Rewrite opp_0 : nz.
Theorem add_pred_l n m : P n + m == P (n + m).
Proof.