diff --git a/README.md b/README.md
index a0ec4ee..2560554 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ After=network.target
 Type=simple
 User=pulsarss
 Group=pulsarss
-ExecStart=pulsarss --source https://path/to/feed.rss
+ExecStart=pulsarss -s https://path/to/feed.rss
 
 [Install]
 WantedBy=multi-user.target