diff --git a/src/Commands/deleteLearn.ts b/src/Commands/deleteLearn.ts
index 056eb4a..72a4191 100644
--- a/src/Commands/deleteLearn.ts
+++ b/src/Commands/deleteLearn.ts
@@ -8,14 +8,23 @@ export default class extends Command {
   public async execute(msg: Message, args: string[]) {
     const db = await msg.client.chatBot.db.getConnection()
     const command = args[0]
-    const [rows] = await db.execute<LearnData[]>('SELECT * FROM learn WHERE command = ?;', [command])
-    
+    const [rows] = await db.execute<LearnData[]>(
+      'SELECT * FROM learn WHERE command = ?;',
+      [command],
+    )
+
+    if (!command) {
+      return msg.channel.send('```멒힌아 삭제 (지울 단어)```')
+    }
+
     if (!rows[0]) {
-      await msg.channel.send('해당하는 걸 찾ㅈ을 수 없어요.')
+      return await msg.channel.send('해당하는 걸 찾ㅈ을 수 없어요.')
     }
 
     if (rows[0].user_id !== msg.author.id) {
-      await msg.channel.send('당신ㄴ은 해당 지식을 안가르ㄹ쳐 주셨ㅅ는데요?')
+      return await msg.channel.send(
+        '당신ㄴ은 해당 지식을 안가르ㄹ쳐 주셨ㅅ는데요?',
+      )
     }
 
     try {
diff --git a/src/Commands/learn.ts b/src/Commands/learn.ts
index 96e6d5b..6e415b5 100644
--- a/src/Commands/learn.ts
+++ b/src/Commands/learn.ts
@@ -24,6 +24,7 @@ export default class extends Command {
       'migan',
       '간미',
       '삭제',
+      '삭제',
     ]
     const disallowed = ['@everyone', '@here', `<@${config.bot.owner_ID}>`]
     const db = await msg.client.chatBot.db.getConnection()