diff --git a/hwe/j_msg_get_recent.php b/hwe/j_msg_get_recent.php
index 9a22adab..04d0faf8 100644
--- a/hwe/j_msg_get_recent.php
+++ b/hwe/j_msg_get_recent.php
@@ -28,7 +28,7 @@ if(count($lastMsgGet) >= 10){
         $lastMsgGet = [];
     } 
 }
-$lastMsgGet[] = $now;
+$lastMsgGet[] = TimeUtil::now();
 $session->lastMsgGet = Json::encode($lastMsgGet);
 
 if($delayTime){
diff --git a/src/sammo/Session.php b/src/sammo/Session.php
index 56b7661e..0a641b6d 100644
--- a/src/sammo/Session.php
+++ b/src/sammo/Session.php
@@ -204,6 +204,7 @@ class Session
         $this->set('acl', null);
         $this->set('reqOTP', null);
         $this->set('time', time());
+        $this->set('lastMsgGet', null);
         return $this;
     }