diff --git a/README.md b/README.md
index 894651e..7dee95e 100644
--- a/README.md
+++ b/README.md
@@ -42,8 +42,6 @@ Please download latest install package from [Release](https://github.com/OPENSPH
 
 # User manual
 
-**[EN]**
-
 1. Add "Branch Output" as effect filters to any "Source" or "Scene" (NOTE: "Scene" has no audio defaultly)
 2. Input server URL and stream key. The server URL can be RTMP or SRT etc. like OBS's custom stream settings.
 3. Choose audio source. Un-checked custom audio source means use filter audio as source (NOTE: "Scene"
@@ -83,6 +81,8 @@ This method should work well except for some sources (e.g., media sources) that
 
 ## 2. To stream program out to multiple streaming platforms.
 
+> **Important note**: Work in studio mode to prevent video loops.
+
 This can be done by using the plugin [Main View Source](https://obsproject.com/forum/resources/main-view-source.1501/) along with it.
 
 1. Create new blank scene (The scene for streaming)
diff --git a/README_ja.md b/README_ja.md
index 6d8b480..12c8ce3 100644
--- a/README_ja.md
+++ b/README_ja.md
@@ -83,6 +83,8 @@ Branch Output はシーンがアクティブでなくとも配信を行います
 
 ## 2. プログラムアウトを複数の配信プラットフォームに配信したい
 
+> **重要**: 映像のループを防ぐために、スタジオモードで作業してください。
+
 [Main View Source](https://obsproject.com/forum/resources/main-view-source.1501/) というプラグインを併用すると可能です。
 
 1. 新たにブランクシーンを作成（配信用シーン）