diff --git a/qrcode-quiz/index.ts b/qrcode-quiz/index.ts
index ad71f792..109730f6 100644
--- a/qrcode-quiz/index.ts
+++ b/qrcode-quiz/index.ts
@@ -397,7 +397,7 @@ export default (slackClients: SlackInterface) => {
 				});
 
 				const standardRuleUrl = 'https://scrapbox.io/tsg/QR%E5%BD%93%E3%81%A6%E3%82%AF%E3%82%A4%E3%82%BA%2F%E6%A8%99%E6%BA%96%E3%83%AB%E3%83%BC%E3%83%AB';
-				const quizText = `このQRコード、なんと書いてあるでしょう? (difficulty = ${quizOptions.difficulty}, mode = ${quizOptions.mode}, masked = ${!quizOptions.isUnmasked}) <${standardRuleUrl}|標準ルール>`;
+				const quizText = `このQRコード、なんと書いてあるでしょう? (difficulty = ${quizOptions.difficulty}, mode = ${quizOptions.mode}, masked = ${!quizOptions.isUnmasked}) <${standardRuleUrl}|[標準ルール]>`;
 
 				const ateQuiz = new QrAteQuiz(slackClients, {
 					problemMessage: {
@@ -407,7 +407,7 @@ export default (slackClients: SlackInterface) => {
 							{
 								type: 'section',
 								text: {
-									type: 'plain_text',
+									type: 'mrkdwn',
 									text: quizText,
 								},
 								accessory: {
@@ -417,6 +417,8 @@ export default (slackClients: SlackInterface) => {
 								},
 							},
 						],
+						unfurl_links: false,
+						unfurl_media: false,
 					},
 					hintMessages: [],
 					immediateMessage: {