diff --git a/miner/docs/updates.md b/miner/docs/updates.md
index c0c4c28..ea5cc00 100644
--- a/miner/docs/updates.md
+++ b/miner/docs/updates.md
@@ -11,7 +11,6 @@
 
 > 就是卡常
 反正现在在我的 5800x 上能跑到 700E/d (单线程) 了
-
 > 我预计在后面加一下多线程运行的时候加个总计效率
 
 ## 0.2.15~16
diff --git a/miner/src/main.rs b/miner/src/main.rs
index 65a8147..8c5a7aa 100644
--- a/miner/src/main.rs
+++ b/miner/src/main.rs
@@ -102,7 +102,7 @@ fn main() {
     let left = cli_arg.start % cli_arg.thread_count as u64;
     cli_arg.end = cli_arg.end.wrapping_add(left);
 
-    let mut threads = Vec::with_capacity(cli_arg.thread_count as usize);
+    let mut threads = vec![];
     let now = chrono::Local::now().format("%Y-%m-%d_%H-%M-%S").to_string();
     // namerena-<team>-<time>.csv
     // <time>: %Y-%m-%d-%H-%M-%S