diff --git a/src/README.md b/src/README.md
index b386642..f1460aa 100644
--- a/src/README.md
+++ b/src/README.md
@@ -114,7 +114,7 @@
     - [模式语法](ch18-03-pattern-syntax.md)
 
 - [高级特征](ch19-00-advanced-features.md)
-    - [不安全的 Rust](ch19-01-unsafe-rust.md)
+    - [不安全 Rust](ch19-01-unsafe-rust.md)
     - [高级 trait](ch19-03-advanced-traits.md)
     - [高级类型](ch19-04-advanced-types.md)
     - [高级函数与闭包](ch19-05-advanced-functions-and-closures.md)
diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 6d6d3ed..245e277 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -122,7 +122,7 @@
   - [模式语法](ch19-03-pattern-syntax.md)
 
 - [高级特性](ch20-00-advanced-features.md)
-  - [不安全的 Rust](ch20-01-unsafe-rust.md)
+  - [不安全 Rust](ch20-01-unsafe-rust.md)
   - [高级 trait](ch20-02-advanced-traits.md)
   - [高级类型](ch20-03-advanced-types.md)
   - [高级函数与闭包](ch20-04-advanced-functions-and-closures.md)