diff --git a/README.md b/README.md
index 15df1b2..553e37d 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,6 @@ You can use this to fill up your local InfluxDB with previous data or fill data
 * delete all lines that you already have in your DB (you must keep the csv header line)
 * export settings as environment vars in case they differ from the defaults
   (INFLUXDB_HOST, INFLUXDB_PORT, INFLUXDB_DATABASE, SENSOR_ID)
-* run `cat <file1.csv> [file2.csv...] | ./to_line_protocol.py | ./to_influx_db.sh`
+* run `cat <file1.csv> | ./to_line_protocol.py | ./to_influx_db.sh`
 
 I should advise you to backup the DB first :stuck_out_tongue: