diff --git a/examples/.env.template b/examples/.env.template
index c216f21b..97ec9377 100644
--- a/examples/.env.template
+++ b/examples/.env.template
@@ -3,7 +3,7 @@
 SORA_SIGNALING_URLS=wss://1.example.com./signaling,wss://2.example.com/signaling
 SORA_CHANNEL_ID=sora
 SORA_METADATA='{"access_token": "secret"}'
-SORA_MESSAGING_LABEL=#sora-python-sdk
+SORA_MESSAGING_LABEL='#sora-python-sdk'
 
 # オプション設定
 # SORA_VIDEO_CODEC_TYPE=vp9