diff --git a/psi-alerts.sh b/psi-alerts.sh
index cf157cf..276e4e6 100755
--- a/psi-alerts.sh
+++ b/psi-alerts.sh
@@ -291,7 +291,7 @@ while true; do
                 for alarm in ${alarms}; do
                     integer elapsed=$(( now - ${secs[${alarm}]} ))
                     if is_clear "${alarm}" && (( elapsed >= 300 )); then
-                        current_alarms=$(sed -E "s/${alarm}\|?//" <<< "${current_alarms}")
+                        current_alarms=$(sed -E "s/${alarm}\|?//; s/|$//" <<< "${current_alarms}")
                         unset "notice_sent[${alarm}]"
                         unset "secs[${alarm}]"
                     fi