diff --git a/module/program/model.php b/module/program/model.php
index 3df689e5ce..c1942e0368 100644
--- a/module/program/model.php
+++ b/module/program/model.php
@@ -94,11 +94,8 @@ class programModel extends model
             $this->dao->update(TABLE_PROJECT)->set('`order`')->eq($programID * 5)->where('id')->eq($programID)->exec();
             $this->file->updateObjectID($this->post->uid, $programID, 'project');
 
-            if($project->parent > 0)
-            {
-                $this->dao->update(TABLE_PROJECT)->set('isCat')->eq(1)->where('id')->eq($project->parent)->exec();
-                $this->fixPath($programID);
-            }
+            if($project->parent > 0) $this->dao->update(TABLE_PROJECT)->set('isCat')->eq(1)->where('id')->eq($project->parent)->exec();
+            $this->setTreePath($programID);
 
             /* Add program admin.*/
             $groupPriv = $this->dao->select('t1.*')->from(TABLE_USERGROUP)->alias('t1')
@@ -221,24 +218,20 @@ class programModel extends model
         return $count > 0;
     }
 
-    public function fixPath($programID)
+    public function setTreePath($programID)
     {
-        $path    = array();
         $program = $this->dao->select('*')->from(TABLE_PROJECT)->where('id')->eq($programID)->fetch();
-        if($program->parent == 0)
-        {
-            $path['path']  = ",{$program->id},";
-            $path['grade'] = 1;
-            $this->dao->update(TABLE_PROJECT)->set('path')->eq($path['path'])->set('grade')->eq($path['grade'])->where('id')->eq($program->id)->exec();
-        }
-        else
-        {
-            $path = $this->fixPath($program->parent);
-            $path['path']  .= "{$program->id},";
-            $path['grade'] += 1;
-            $this->dao->update(TABLE_PROJECT)->set('path')->eq($path['path'])->set('grade')->eq($path['grade'])->where('id')->eq($program->id)->exec();
-        }
 
-        return $path;
+        $path['path']  = ",{$program->id},";
+        $path['grade'] = 1;
+
+        if($program->parent)
+        {
+            $parent = $this->dao->select('*')->from(TABLE_PROJECT)->where('id')->eq($program->parent)->fetch();
+
+            $path['path']  = $parent->path . "{$program->id},";
+            $path['grade'] = $parent->grade + 1;
+        }
+        $this->dao->update(TABLE_PROJECT)->set('path')->eq($path['path'])->set('grade')->eq($path['grade'])->where('id')->eq($program->id)->exec();
     }
 }