diff --git a/codes/rust/chapter_computational_complexity/time_complexity.rs b/codes/rust/chapter_computational_complexity/time_complexity.rs
index b18f19ad..066dbac6 100644
--- a/codes/rust/chapter_computational_complexity/time_complexity.rs
+++ b/codes/rust/chapter_computational_complexity/time_complexity.rs
@@ -1,10 +1,9 @@
+#![allow(unused_variables)]
 /**
  * File: time_complexity.cpp
  * Created Time: 2023-01-10
  * Author: xBLACICEx (xBLACKICEx@outlook.com )
- */
-
-#[allow(unused_variables)]
+*/
 
 /* 常数阶 */
 fn constant(n: i32) -> i32 {