diff --git a/metrology/collectd_exec_xmpp.sh b/metrology/collectd_exec_xmpp.sh
index 6ce0d5d..7e8afb4 100755
--- a/metrology/collectd_exec_xmpp.sh
+++ b/metrology/collectd_exec_xmpp.sh
@@ -35,7 +35,7 @@ http_upload_disk_usage() {
 }
 
 captcha_stats() {
-    echo "PUTVAL \"${HOSTNAME}/xmpp_captcha_lastday/count\" interval=$INTERVAL $(date +%s):$(find /var/lib/ejabberd/chapril_captchas/ -mindepth 1 -maxdepth 1 -type f -mtime 1 | grep -v EXPERIMENTAL | wc -l)"
+    echo "PUTVAL \"${HOSTNAME}/xmpp_captcha_lastday/count\" interval=$INTERVAL $(date +%s):$(find /var/lib/ejabberd/chapril_captchas/ -mindepth 1 -maxdepth 1 -type f -mtime -1 | grep -v EXPERIMENTAL | wc -l)"
 }
 
 # XXX la syntaxe de la boucle while ci-dessous fait échouer le démarrage de collectd.