diff --git a/module/execution/model.php b/module/execution/model.php
index 1e1144d216..711d30c265 100644
--- a/module/execution/model.php
+++ b/module/execution/model.php
@@ -307,7 +307,7 @@ class executionModel extends model
 
             /*Judge workdays is legitimate. */
             $workdays = helper::diffDate($_POST['end'], $_POST['begin']);
-            if($_POST['days'] > $workdays)
+            if(isset($_POST['days']) and $_POST['days'] > $workdays)
             {
                 dao::$errors['days'] = sprintf($this->lang->project->workdaysExceed, $workdays);
                 return false;
@@ -462,7 +462,7 @@ class executionModel extends model
         /*Judge workdays is legitimate. */
         $this->app->loadLang('project');
         $workdays = helper::diffDate($_POST['end'], $_POST['begin']);
-        if($_POST['days'] > $workdays)
+        if(isset($_POST['days']) and $_POST['days'] > $workdays)
         {
             dao::$errors['days'] = sprintf($this->lang->project->workdaysExceed, $workdays);
             return false;
@@ -661,7 +661,7 @@ class executionModel extends model
 
             /*Judge workdays is legitimate. */
             $workdays = helper::diffDate($data->ends[$executionID], $data->begins[$executionID]);
-            if($data->dayses[$executionID] > $workdays)
+            if(isset($data->dayses[$executionID]) and $data->dayses[$executionID] > $workdays)
             {
                 $this->app->loadLang('project');
                 dao::$errors['days'][] = 'execution#' . $executionID . sprintf($this->lang->project->workdaysExceed, $workdays);
diff --git a/module/project/control.php b/module/project/control.php
index 9514754597..e9a781220c 100644
--- a/module/project/control.php
+++ b/module/project/control.php
@@ -382,7 +382,7 @@ class project extends control
 
         if($_POST)
         {
-            $projectID = $this->project->create($model);
+            $projectID = $this->project->create();
             if(dao::isError()) return $this->send(array('result' => 'fail', 'message' => dao::getError()));
 
             $this->loadModel('action')->create('project', $projectID, 'opened');
diff --git a/module/project/model.php b/module/project/model.php
index 807730ba3a..a1a6d2d535 100644
--- a/module/project/model.php
+++ b/module/project/model.php
@@ -787,7 +787,7 @@ class projectModel extends model
      * @access public
      * @return int|bool
      */
-    public function create($model)
+    public function create()
     {
         $project = fixer::input('post')
             ->callFunc('name', 'trim')
@@ -849,7 +849,7 @@ class projectModel extends model
 
         /*Judge workdays is legitimate. */
         $workdays = helper::diffDate($project->end, $project->begin);
-        if($model == 'scrum' and $project->days > $workdays)
+        if(isset($project->days) and $project->days > $workdays)
         {
             dao::$errors['days'] = sprintf($this->lang->project->workdaysExceed, $workdays);
             return false;
@@ -1097,7 +1097,7 @@ class projectModel extends model
 
         /*Judge workdays is legitimate. */
         $workdays = helper::diffDate($project->end, $project->begin);
-        if($project->days > $workdays)
+        if(isset($project->days) and $project->days > $workdays)
         {
             dao::$errors['days'] = sprintf($this->lang->project->workdaysExceed, $workdays);
             return false;