diff --git a/src/lib/markdown.js b/src/lib/markdown.js
index de9509e..8a37276 100644
--- a/src/lib/markdown.js
+++ b/src/lib/markdown.js
@@ -3,7 +3,6 @@ Remark and rehype functions
  */
 import { visit } from 'unist-util-visit';
 const alertRegex = /^:>(NOTE|TIP|IMPORTANT|WARNING|CAUTION)/i;
-const alertLegacyRegex = /^:>(NOTE|TIP|IMPORTANT|WARNING|CAUTION)(\/.*)?/i;
 /**
  * Alerts are a Markdown extension based on the blockquote syntax that you can use to emphasize critical information.
  * On GitHub, they are displayed with distinctive colors and icons to indicate the significance of the content.
@@ -11,7 +10,7 @@ const alertLegacyRegex = /^:>(NOTE|TIP|IMPORTANT|WARNING|CAUTION)(\/.*)?/i;
  *
  * This is adapted from `remark-github-blockquote-alert`
  */
-function remarkAlert/*: Plugin<[Option?], Root> = */({ legacyTitle = false } = {}) /*=>*/ {
+function remarkAlert/*: Plugin<[Option?], Root> = */() /*=>*/ {
     return (tree) => {
         visit(tree, "blockquote", (node, index, parent) => {
             let alertType = '';
@@ -21,12 +20,12 @@ function remarkAlert/*: Plugin<[Option?], Root> = */({ legacyTitle = false } = {
                 if (isNext && item.type === "paragraph") {
                     const firstNode = item.children[0];
                     const text = firstNode.type === 'text' ? firstNode.value : '';
-                    const reg = legacyTitle ? alertLegacyRegex : alertRegex;
+                    const reg = alertRegex;
                     const match = text.match(reg);
                     if (match) {
                         isNext = false;
                         alertType = match[1].toLocaleLowerCase();
-                        title = legacyTitle ? match[2] || alertType.toLocaleUpperCase() : alertType.toLocaleUpperCase();
+                        title = alertType.toLocaleUpperCase();
                         if (text.includes('\n')) {
                             item.children[0] = {
                                 type: 'text',