From e3acada131f71de367def8d604caacf042a1796f Mon Sep 17 00:00:00 2001
From: Shinya Sato <shinnya.sato@gmail.com>
Date: Sun, 19 Dec 2021 20:31:36 +0900
Subject: Update README.md

---
 README.md | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index b1fd8e2..0cdc654 100644
--- a/README.md
+++ b/README.md
@@ -55,13 +55,13 @@ Inpla is a multi-threaded parallel interpreter of interaction nets. Once you wri
     $ make
     ```
 
-  - Multi-thread version: Use `make` with `thread` option (it may also need `make clear` before that):  
+  - Multi-thread version: Use `make` with `thread` option:  
   
     ```
     $ make thread
     ```
-
-
+    
+     To get the single-thread version again, use `make clean; make`.
 
 ## How to Execute
 
-- 
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