diff --git a/.github/release.md b/.github/release.md
index 0122f4a..5e88042 100644
--- a/.github/release.md
+++ b/.github/release.md
@@ -14,6 +14,7 @@
 - 修复登录二次验证页面内容位置
 - 修复后台管理的运维管理面板的样式
 - 取消修改编辑器字体大小, 避免光标错位
+- 修复文件预览时文件树有边框过粗
 
 ## 📃 English (From AI)
 
diff --git a/styles/components/filelist.ts b/styles/components/filelist.ts
index 63a9bbb..4e3a988 100644
--- a/styles/components/filelist.ts
+++ b/styles/components/filelist.ts
@@ -182,7 +182,7 @@ export const repoFileView = css`
           position: absolute;
           top: 0;
           right: 0;
-          width: 1.5;
+          width: 1px;
           height: calc(100% + 64px); // 头部高度
           background: ${themeVars.color.secondary.self};
         }