From 63f1996b5f9d3b0f2d544f7b0bc87da56e5356d4 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 10 Apr 2019 20:02:33 +0530
Subject: [PATCH] ...

---
 README.python3 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.python3 b/README.python3
index 6f34cd75e3..7f26de9993 100644
--- a/README.python3
+++ b/README.python3
@@ -18,7 +18,7 @@ Now build the calibre C extensions for python 3 with:
 
 You should now be able to run the calibre test suite using:
 
-    python3 setup.py test
+    CALIBRE_PY3_PORT=1 python3 setup.py test
 
 And run calibre itself (which may not work) with: