diff --git a/README.md b/README.md
index c32d794..fd35863 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ Linux Insides
 | 7. Memory management||正在进行|
 |├ 7.0|[@mudongliang](https://github.com/mudongliang)|已完成|
 |├ 7.1|[@choleraehyq](https://github.com/choleraehyq)|已完成|
-|└ 7.2||[@choleraehyq](https://github.com/choleraehyq)|已完成|
+|└ 7.2|[@choleraehyq](https://github.com/choleraehyq)|已完成|
 | 8. SMP||未开始|
 | 9. Concepts||正在进行|
 |├ 9.0|[@mudongliang](https://github.com/mudongliang)|已完成|