diff --git a/services/llm.ts b/services/llm.ts
index 36b790d..06e35cb 100644
--- a/services/llm.ts
+++ b/services/llm.ts
@@ -111,6 +111,7 @@ You are a professional podcaster. Create a detailed podcast script based on the
 - Translate all news article titles to Japanese and introduce them at the beginning
 - Create substantive commentary that adds value beyond just reading headlines
 - Conclude with a comprehensive summary of the overall topic
+- The podcast name must be "自動生成ポッドキャスト"
 
 **Format Requirements:**
 - Length: 1000-5000 characters (Japanese)
@@ -125,6 +126,7 @@ You are a professional podcaster. Create a detailed podcast script based on the
   - "GitHub" → "ギットハブ"
   - "OpenAI" → "オープンエーアイ"
 - Don't include any urls in the script.
+- Don't include any non-Japanese characters in the script.
 - Apply this conversion consistently throughout the script
 
 **Structure:**