diff --git a/module/execution/lang/de.php b/module/execution/lang/de.php
index c39f1544ad..0441cf1ed8 100644
--- a/module/execution/lang/de.php
+++ b/module/execution/lang/de.php
@@ -380,8 +380,8 @@ $lang->execution->errorBegin                  = "The start time of {$lang->execu
 $lang->execution->errorEnd                    = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the project.";
 $lang->execution->errorLetterProject          = "The start time of stage cannot be less than the start time of the project %s.";
 $lang->execution->errorGreaterProject         = "The end time of stage cannot be greater than the end time %s of the project.";
-$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' "%s" should be ≥ the start date of project %s: %s.';
-$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' "%s" should be ≤ the deadline of project %s: %s.';
+$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' should be ≥ the start date of project : %s.';
+$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of project : %s.';
 $lang->execution->accessDenied                = "Zugriff zu {$lang->executionCommon} verweigert!";
 $lang->execution->tips                        = 'Hinweis';
 $lang->execution->afterInfo                   = "{$lang->executionCommon} wurde erstellt. Als nächstes können Sie ";
diff --git a/module/execution/lang/en.php b/module/execution/lang/en.php
index 242f35f23b..3d1edaddc3 100644
--- a/module/execution/lang/en.php
+++ b/module/execution/lang/en.php
@@ -380,8 +380,8 @@ $lang->execution->errorBegin                  = "The start time of {$lang->execu
 $lang->execution->errorEnd                    = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the project.";
 $lang->execution->errorLetterProject          = "The start time of stage cannot be less than the start time of the project %s.";
 $lang->execution->errorGreaterProject         = "The end time of stage cannot be greater than the end time %s of the project.";
-$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' "%s" should be ≥ the start date of project "%s": %s.';
-$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' "%s" should be ≤ the deadline of project "%s": %s.';
+$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' should be ≥ the start date of project : %s.';
+$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of project : %s.';
 $lang->execution->accessDenied                = "Your access to {$lang->executionCommon} is denied!";
 $lang->execution->tips                        = 'Note';
 $lang->execution->afterInfo                   = "{$lang->executionCommon} is created. Next you can ";
diff --git a/module/execution/lang/fr.php b/module/execution/lang/fr.php
index 2c882fcda4..57eaa38f6f 100644
--- a/module/execution/lang/fr.php
+++ b/module/execution/lang/fr.php
@@ -380,8 +380,8 @@ $lang->execution->errorBegin                  = "The start time of {$lang->execu
 $lang->execution->errorEnd                    = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the project.";
 $lang->execution->errorLetterProject          = "The start time of stage cannot be less than the start time of the project %s.";
 $lang->execution->errorGreaterProject         = "The end time of stage cannot be greater than the end time %s of the project.";
-$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' "%s" should be ≥ the start date of project %s: %s.';
-$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' "%s" should be ≤ the deadline of project %s: %s.';
+$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' should be ≥ the start date of project : %s.';
+$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of project : %s.';
 $lang->execution->accessDenied                = "Votre accès au {$lang->executionCommon} est refusé ! Désolé.";
 $lang->execution->tips                        = 'Note';
 $lang->execution->afterInfo                   = "Le {$lang->executionCommon} a été créé avec succès ! Ensuite vous pouvez ";
diff --git a/module/execution/lang/vi.php b/module/execution/lang/vi.php
index 766a66f77f..c1f02f6280 100644
--- a/module/execution/lang/vi.php
+++ b/module/execution/lang/vi.php
@@ -337,6 +337,8 @@ $lang->execution->unfinishedExecution         = "This {$lang->executionCommon} h
 $lang->execution->unfinishedTask              = "[%s] unfinished tasks. ";
 $lang->execution->unresolvedBug               = "[%s] unresolved bugs. ";
 $lang->execution->projectNotEmpty             = 'Project cannot be empty.';
+$lang->execution->errorCommonBegin            = 'The start date of ' . $lang->executionCommon . ' should be ≥ the start date of project : %s.';
+$lang->execution->errorCommonEnd              = 'The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of project : %s.';
 
 /* Statistics. */
 $lang->execution->charts = new stdclass();
diff --git a/module/execution/lang/zh-cn.php b/module/execution/lang/zh-cn.php
index b29446e64e..eb4a3b6bd7 100644
--- a/module/execution/lang/zh-cn.php
+++ b/module/execution/lang/zh-cn.php
@@ -380,8 +380,8 @@ $lang->execution->errorBegin                  = "{$lang->executionCommon}的开
 $lang->execution->errorEnd                    = "{$lang->executionCommon}的截止时间不能大于所属项目的结束时间%s。";
 $lang->execution->errorLetterProject          = "阶段的计划开始时间不能小于所属项目的计划开始时间%s。";
 $lang->execution->errorGreaterProject         = "阶段的计划完成时间不能大于所属项目的计划完成时间%s。";
-$lang->execution->errorCommonBegin            = $lang->executionCommon . '“%s”开始日期应大于等于项目“%s”的开始日期：%s。';
-$lang->execution->errorCommonEnd              = $lang->executionCommon . '“%s”截止日期应小于等于项目“%s”的截止日期：%s。';
+$lang->execution->errorCommonBegin            = $lang->executionCommon . '开始日期应大于等于项目的开始日期：%s。';
+$lang->execution->errorCommonEnd              = $lang->executionCommon . '截止日期应小于等于项目的截止日期：%s。';
 $lang->execution->accessDenied                = "您无权访问该{$lang->executionCommon}！";
 $lang->execution->tips                        = '提示';
 $lang->execution->afterInfo                   = "{$lang->executionCommon}添加成功，您现在可以进行以下操作：";
diff --git a/module/execution/model.php b/module/execution/model.php
index 4226b06b88..124dd02c13 100644
--- a/module/execution/model.php
+++ b/module/execution/model.php
@@ -305,7 +305,7 @@ class executionModel extends model
                 return false;
             }
 
-            if($this->config->systemMode == 'new' and !empty($_POST['name'])) $this->checkBeginAndEndDate($_POST['project'], $_POST['begin'], $_POST['end'], $_POST['name']);
+            if($this->config->systemMode == 'new') $this->checkBeginAndEndDate($_POST['project'], $_POST['begin'], $_POST['end']);
             if(dao::isError()) return false;
 
             /* Determine whether to add a sprint or a stage according to the model of the execution. */
@@ -500,7 +500,7 @@ class executionModel extends model
 
         if(in_array($execution->status, array('closed', 'suspended'))) $this->computeBurn($executionID);
 
-        if($this->config->systemMode == 'new' and (empty($execution->project) or $execution->project == $oldExecution->project) and !empty($execution->name)) $this->checkBeginAndEndDate($oldExecution->project, $execution->begin, $execution->end, $execution->name);
+        if($this->config->systemMode == 'new' and (empty($execution->project) or $execution->project == $oldExecution->project)) $this->checkBeginAndEndDate($oldExecution->project, $execution->begin, $execution->end);
         if(dao::isError()) return false;
 
         /* Child stage inherits parent stage permissions. */
@@ -869,7 +869,7 @@ class executionModel extends model
             ->remove('comment')
             ->get();
 
-        if($this->config->systemMode == 'new' and !empty($oldExecution->name)) $this->checkBeginAndEndDate($oldExecution->project, $execution->begin, $execution->end, $oldExecution->name);
+        if($this->config->systemMode == 'new') $this->checkBeginAndEndDate($oldExecution->project, $execution->begin, $execution->end);
         if(dao::isError()) return false;
 
         $execution = $this->loadModel('file')->processImgURL($execution, $this->config->execution->editor->putoff['id'], $this->post->uid);
@@ -1117,16 +1117,15 @@ class executionModel extends model
      * @param  int    $projectID
      * @param  string $begin
      * @param  string $end
-     * @param  string $executionName
      * @access public
      * @return void
      */
-    public function checkBeginAndEndDate($projectID, $begin, $end, $executionName)
+    public function checkBeginAndEndDate($projectID, $begin, $end)
     {
         $project = $this->loadModel('project')->getByID($projectID);
 
-        if($begin < $project->begin) dao::$errors['begin'] = sprintf($this->lang->execution->errorCommonBegin, $executionName, $project->name, $project->begin);
-        if($end > $project->end)     dao::$errors['end']   = sprintf($this->lang->execution->errorCommonEnd, $executionName, $project->name, $project->end);
+        if($begin < $project->begin) dao::$errors['begin'] = sprintf($this->lang->execution->errorCommonBegin, $project->begin);
+        if($end > $project->end)     dao::$errors['end']   = sprintf($this->lang->execution->errorCommonEnd, $project->end);
     }
 
     /*