diff --git a/notification/ntfy.go b/notification/ntfy.go
index 0e94516..8132d08 100644
--- a/notification/ntfy.go
+++ b/notification/ntfy.go
@@ -81,7 +81,7 @@ func (ntfy NTFY) Send(problemID int, msg []byte) (err error) {
 
 	ackURL := fmt.Sprintf("http, OK, %s/notification/ack?problemID=%d", ntfy.AcknowledgeURL, problemID)
 	req.Header.Add("X-Actions", ackURL)
-	req.Header.Add("X-Priority", "4") // XXX: should be 5
+	req.Header.Add("X-Priority", "5")
 	req.Header.Add("X-Tags", "calendar")
 
 	res, err = http.DefaultClient.Do(req)