diff --git a/README.md b/README.md
index b610d86..4738b60 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,6 @@ The arguments are:
 	- `mono`: disable multithreading while fetching, makes debugging easier
 	- `theforce`: force download the rss feed and ignore cached http errros
 	- `silent`: don't output the final RSS (useless on its own, but can be nice when debugging)
-	- `smart`: try to show only new elements in feed, to make it lighter (based on 304 headers)
 	- `encoding=ENCODING`: overrides the encoding auto-detection of the crawler. Some web developers did not quite understand the importance of setting charset/encoding tags correctly...
 - http server only
 	- `callback=NAME`: for JSONP calls