From d67a4cfdb738a7c8a694a49ee90db069b3d90d00 Mon Sep 17 00:00:00 2001
From: asymmetric <lorenzo@mailbox.org>
Date: Mon, 27 May 2019 22:29:35 +0000
Subject: [PATCH] Fix link to OpenZeppelin ECDSA library

Previous link was a 404.
---
 docs/units-and-global-variables.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst
index befb97dbb..604386c47 100644
--- a/docs/units-and-global-variables.rst
+++ b/docs/units-and-global-variables.rst
@@ -194,7 +194,7 @@ Mathematical and Cryptographic Functions
     the ecrecover function remained unchanged.
 
     This is usually not a problem unless you require signatures to be unique or
-    use them to identify items. OpenZeppelin have a `ECDSA helper library <https://docs.openzeppelin.org/docs/cryptography_ecdsa>`_ that you can use as a wrapper for ``ecrecover`` without this issue.
+    use them to identify items. OpenZeppelin have a `ECDSA helper library <https://docs.openzeppelin.org/v2.3.0/api/cryptography#ecdsa>`_ that you can use as a wrapper for ``ecrecover`` without this issue.
 
 .. note::