diff --git a/adapters/telegram/src/bot.ts b/adapters/telegram/src/bot.ts
index 0a11daf2..ac31e911 100644
--- a/adapters/telegram/src/bot.ts
+++ b/adapters/telegram/src/bot.ts
@@ -201,6 +201,10 @@ export class TelegramBot<C extends Context = Context, T extends TelegramBot.Conf
 
   async updateCommands(commands: Universal.Command[]) {
     if (!this.config.slash) return
+    commands = commands.filter((command) => {
+      // https://core.telegram.org/bots/api#botcommand
+      return /^[\w-]{1,32}$/g.test(command.name)
+    })
     const result = {} as Record<string, Telegram.BotCommand[]>
     for (const cmd of commands) {
       const { name, description } = cmd
@@ -211,8 +215,10 @@ export class TelegramBot<C extends Context = Context, T extends TelegramBot.Conf
         languages[lang] ||= description[locale]
       }
       for (const lang in languages) {
-        result[lang] ??= []
-        result[lang].push({ command: name, description: languages[lang] })
+        (result[lang] ??= []).push({
+          command: name.toLowerCase().replace(/[^\w]/g, '_'),
+          description: languages[lang],
+        })
       }
     }
     for (const lang in result) {
@@ -223,7 +229,7 @@ export class TelegramBot<C extends Context = Context, T extends TelegramBot.Conf
     }
     await this.internal.setMyCommands({
       commands: commands.map(({ name, description }) => ({
-        command: name,
+        command: name.toLowerCase().replace(/[^\w]/g, '_'),
         description: description[''] || name,
       })),
     })
diff --git a/adapters/telegram/src/utils.ts b/adapters/telegram/src/utils.ts
index 47d65ab2..5ebc7c8b 100644
--- a/adapters/telegram/src/utils.ts
+++ b/adapters/telegram/src/utils.ts
@@ -59,7 +59,9 @@ export async function handleUpdate(update: Telegram.Update, bot: TelegramBot) {
     session.content = command + session.content.slice(group.length)
   } else if (message) {
     if (update.message?.media_group_id) {
-      if (!mediaGroupMap.has(update.message.media_group_id)) { mediaGroupMap.set(update.message.media_group_id, [new Date(), []]) }
+      if (!mediaGroupMap.has(update.message.media_group_id)) {
+        mediaGroupMap.set(update.message.media_group_id, [new Date(), []])
+      }
 
       const [, updates] = mediaGroupMap.get(update.message.media_group_id)
       session.type = update.message || update.channel_post ? 'message' : 'message-updated'