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-rw-r--r--contrib/correctness/ProgInt.v6
1 files changed, 3 insertions, 3 deletions
diff --git a/contrib/correctness/ProgInt.v b/contrib/correctness/ProgInt.v
index ec46e2de62..470162ca34 100644
--- a/contrib/correctness/ProgInt.v
+++ b/contrib/correctness/ProgInt.v
@@ -13,7 +13,7 @@
Require Export ZArith.
Require Export ZArith_dec.
-Theorem Znotzero : (x:Z){`x<>0`}+{`x=0`}.
+Theorem Znotzero : forall x:Z, {x <> 0%Z} + {x = 0%Z}.
Proof.
-Intro x. Elim (Z_eq_dec x `0`) ; Auto.
-Save.
+intro x. elim (Z_eq_dec x 0); auto.
+Qed. \ No newline at end of file