diff --git a/module/task/lang/de.php b/module/task/lang/de.php
index 649f29c294..c5155b0eb8 100644
--- a/module/task/lang/de.php
+++ b/module/task/lang/de.php
@@ -273,6 +273,7 @@ $lang->task->noticeLinkStory           = "No story has been linked. You can for
 $lang->task->noticeLinkStoryNoProduct  = "No story has been linked.";
 $lang->task->noticeSaveRecord          = 'Ihre Stunden wurden nicht gespeichrt. Bitte erst speichern.';
 $lang->task->noticeManageTeam          = 'Task status is %s, can not manage team.';
+$lang->task->teamNotEmpty              = 'Team can not be empty.';
 $lang->task->commentActions            = '%s. %s, kommentiert von <strong>%s</strong>.';
 $lang->task->deniedNotice              = 'Nur %s kann die Aufgabe %s.';
 $lang->task->deniedStatusNotice        = 'The task status is %s, the effort cannot be maintained.';
diff --git a/module/task/lang/en.php b/module/task/lang/en.php
index d63fb889cc..f2e92a305f 100755
--- a/module/task/lang/en.php
+++ b/module/task/lang/en.php
@@ -273,6 +273,7 @@ $lang->task->noticeLinkStory           = "No story has been linked. You can for
 $lang->task->noticeLinkStoryNoProduct  = "No story has been linked.";
 $lang->task->noticeSaveRecord          = 'Your Hour is not saved. Please save it first.';
 $lang->task->noticeManageTeam          = 'Task status is %s, can not manage team.';
+$lang->task->teamNotEmpty              = 'Team can not be empty.';
 $lang->task->commentActions            = '%s. %s, commented by <strong>%s</strong>.';
 $lang->task->deniedNotice              = 'Only the %s can %s the task.';
 $lang->task->deniedStatusNotice        = 'The task status is %s, the effort cannot be maintained.';
diff --git a/module/task/lang/fr.php b/module/task/lang/fr.php
index eb27eabbc1..09bd4fadc2 100644
--- a/module/task/lang/fr.php
+++ b/module/task/lang/fr.php
@@ -273,6 +273,7 @@ $lang->task->noticeLinkStory           = "No story has been linked. You can for
 $lang->task->noticeLinkStoryNoProduct  = "No story has been linked.";
 $lang->task->noticeSaveRecord          = "Votre temps n'a pas été sauvé. Enregistrez-le d'abord.";
 $lang->task->noticeManageTeam          = 'Task status is %s, can not manage team.';
+$lang->task->teamNotEmpty              = 'Team can not be empty.';
 $lang->task->commentActions            = '%s. %s, commenté par <strong>%s</strong>.';
 $lang->task->deniedNotice              = 'Seulement le %s peut %s la tâche.';
 $lang->task->deniedStatusNotice        = 'The task status is %s, the effort cannot be maintained.';
diff --git a/module/task/lang/zh-cn.php b/module/task/lang/zh-cn.php
index a1f64688b1..0cd2875a70 100755
--- a/module/task/lang/zh-cn.php
+++ b/module/task/lang/zh-cn.php
@@ -273,6 +273,7 @@ $lang->task->noticeLinkStory           = "没有可关联的相关{$lang->SRComm
 $lang->task->noticeLinkStoryNoProduct  = "没有可关联的相关{$lang->SRCommon}";
 $lang->task->noticeSaveRecord          = '您有尚未保存的工时记录，请先将其保存。';
 $lang->task->noticeManageTeam          = '任务状态是%s，不能维护团队';
+$lang->task->teamNotEmpty              = '多人任务团队不能为空。';
 $lang->task->commentActions            = '%s. %s, 由 <strong>%s</strong> 添加备注。';
 $lang->task->deniedNotice              = '当前任务只有%s才可以%s。';
 $lang->task->deniedStatusNotice        = '当前任务状态是%s，不能维护日志。';
diff --git a/module/task/zen.php b/module/task/zen.php
index ce8950c884..e0234eb104 100644
--- a/module/task/zen.php
+++ b/module/task/zen.php
@@ -480,6 +480,13 @@ class taskZen extends task
             ->stripTags($this->config->task->editor->edit['id'], $this->config->allowedTags)
             ->get();
 
+        $team = $this->post->team ? array_filter($this->post->team) : array();
+        if($task->mode && empty($team))
+        {
+            dao::$errors['assignedTo'] = $this->lang->task->teamNotEmpty;
+            return false;
+        }
+
         return $this->loadModel('file')->processImgURL($task, $this->config->task->editor->edit['id'], (string)$this->post->uid);
     }
 
@@ -599,7 +606,7 @@ class taskZen extends task
         $task = $this->loadModel('file')->processImgURL($task, $this->config->task->editor->create['id'], (string)$this->post->uid);
 
         /* Check if the input post data meets the requirements. */
-        $this->checkCreateTask($task);
+        $this->checkCreateTask($task, $team);
         return $task;
     }
 
@@ -913,10 +920,11 @@ class taskZen extends task
      * Check if the input post meets the requirements.
      *
      * @param  object    $task
+     * @param  array     $team
      * @access protected
      * @return bool
      */
-    protected function checkCreateTask(object $task): bool
+    protected function checkCreateTask(object $task, array $team): bool
     {
         /* Check if the estimate is positive. */
         if($task->estimate < 0)
@@ -925,6 +933,12 @@ class taskZen extends task
             return false;
         }
 
+        if($this->post->multiple && empty($team))
+        {
+            dao::$errors['assignedTo'] = $this->lang->task->teamNotEmpty;
+            return false;
+        }
+
         /* If the task start and end date must be between the execution start and end date, check if the task start and end date accord with the conditions. */
         if(!empty($this->config->limitTaskDate))
         {