diff --git a/src/node/markdown/plugins/preWrapper.ts b/src/node/markdown/plugins/preWrapper.ts
index 3daf18fc..7a6b22e7 100644
--- a/src/node/markdown/plugins/preWrapper.ts
+++ b/src/node/markdown/plugins/preWrapper.ts
@@ -15,7 +15,7 @@ export const preWrapperPlugin = (md: MarkdownIt) => {
     const [tokens, idx] = args
     const lang = tokens[idx].info.trim().replace(/-vue$/, '')
     const rawCode = fence(...args)
-    return `<div class="language-${lang}"><button class="copy"></button><span class="lang">${
+    return `<div class="language-${lang}"><button title="Copy Code" class="copy"></button><span class="lang">${
       lang === 'vue-html' ? 'template' : lang
     }</span>${rawCode}</div>`
   }