diff --git a/README.md b/README.md
index e74826f47b7db2e0d906fb30dc1500f916e8aaf7..d6ff16baa5ca2d437a40ce324cb0ab821f21178d 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,8 @@ This project aims to show how to write an **Unix-like OS** running on **RISC-V**
 
 * Platform supported: `qemu-system-riscv64` simulator or dev boards based on [Kendryte K210 SoC](https://canaan.io/product/kendryteai) such as [Maix Dock](https://www.seeedstudio.com/Sipeed-MAIX-Dock-p-4815.html)
 * OS
-  * concurrency of multiple processes each of which contains mutiple native threads
-  * preemptive scheduling(Round-Robin algorithm)
+  * concurrency of multiple processes each of which contains multiple native threads
+  * preemptive scheduling (Round-Robin algorithm)
   * dynamic memory management in kernel
   * virtual memory
   * a simple file system with a block cache