diff --git a/installation/scripts/disconnect.sh b/installation/scripts/disconnect.sh
index bfa07fd..516fb6d 100644
--- a/installation/scripts/disconnect.sh
+++ b/installation/scripts/disconnect.sh
@@ -12,4 +12,4 @@ trusted_port=$(echap "$trusted_port")
 mysql -h$HOST -P$PORT -u$USER -p$PASS $DB -e "UPDATE user SET user_online=0 WHERE user_id='$common_name'"
 
 # We insert the deconnection datetime
-mysql -h$HOST -P$PORT -u$USER -p$PASS $DB -e "UPDATE log SET log_end_time=now(), log_received='$bytes_received', log_send='$bytes_sent' WHERE log_trusted_ip='$trusted_ip' AND log_trusted_port='$trusted_port' AND user_id='$common_name' AND log_end_time=NULL"
+mysql -h$HOST -P$PORT -u$USER -p$PASS $DB -e "UPDATE log SET log_end_time=now(), log_received='$bytes_received', log_send='$bytes_sent' WHERE log_trusted_ip='$trusted_ip' AND log_trusted_port='$trusted_port' AND user_id='$common_name' AND log_end_time IS NULL"