From 376ca366db0469f39b93af0af762090986ea75f2 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter@wuille.net>
Date: Mon, 29 Mar 2021 16:33:36 -0700
Subject: [PATCH] Fix typo in explanation

---
 doc/safegcd_implementation.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/safegcd_implementation.md b/doc/safegcd_implementation.md
index 8346d22e579bd..efb61b06c49b1 100644
--- a/doc/safegcd_implementation.md
+++ b/doc/safegcd_implementation.md
@@ -681,7 +681,7 @@ def update_de(d, e, t, M, Mi):
     cd, ce = (u*d + v*e) % 2**N, (q*d + r*e) % 2**N
     md -= (Mi*cd + md) % 2**N
     me -= (Mi*ce + me) % 2**N
-    cd, ce = u*d + v*e + Mi*md, q*d + r*e + Mi*me
+    cd, ce = u*d + v*e + M*md, q*d + r*e + M*me
     return cd >> N, ce >> N
 ```