diff --git a/README.md b/README.md
index 242ebbc..973faef 100644
--- a/README.md
+++ b/README.md
@@ -121,7 +121,12 @@ Generate the metric file for the first time:
 Create a cron file to update the metric file everyday:
 
 ```
-1 * * * * root /srv/statoolinfos/bin/probe -previousday /srv/statoolinfos/conf/foo.bar.org.conf
+1 * * * * root /srv/statoolinfos/bin/statoolinfos probe -previousday /srv/statoolinfos/conf/foo.bar.org.conf
+```
+
+In case of several configuration files, just set the configuration directory (without wildcard):
+```
+1 * * * * root /srv/statoolinfos/bin/statoolinfos probe -previousday /srv/statoolinfos/conf/
 ```
 
 Warning: in previous day mode, the metrics generated are overwrited for the last month, the last week and the last day. So, six weeks in logs are required.