diff --git a/example/README.md b/example/README.md
index ab63d7b..14edda8 100644
--- a/example/README.md
+++ b/example/README.md
@@ -10,5 +10,5 @@ Run example:
 flutter pub get
 # Due to the inconvenience of typing on mobile devices, 
 # you can autofill URL and TOKEN for first run in debug mode.
-flutter run --dart-define=URL=wss://${LIVEKIT_SERVER_IP_OR_DOMAIN}--dart-define=TOKEN=${YOUR_TOKEN}
+flutter run --dart-define=URL=wss://${LIVEKIT_SERVER_IP_OR_DOMAIN} --dart-define=TOKEN=${YOUR_TOKEN}
 ```