diff --git a/codes/rust/chapter_searching/binary_search.rs b/codes/rust/chapter_searching/binary_search.rs
index 345266e9f..3db2ae8dd 100644
--- a/codes/rust/chapter_searching/binary_search.rs
+++ b/codes/rust/chapter_searching/binary_search.rs
@@ -35,7 +35,7 @@ fn binary_search_lcro(nums: &[i32], target: i32) -> i32 {
         if nums[m as usize] < target {         // 此情况说明 target 在区间 [m+1, j) 中
             i = m + 1;
         } else if nums[m as usize] > target {  // 此情况说明 target 在区间 [i, m) 中
-            j = m - 1;
+            j = m;
         } else {                      // 找到目标元素，返回其索引
             return m;
         }