diff --git a/module/doc/control.php b/module/doc/control.php
index 6d7176bcdd..1aeeab5d10 100755
--- a/module/doc/control.php
+++ b/module/doc/control.php
@@ -411,10 +411,6 @@ class doc extends control
             $docID = $docResult['id'];
             $files = zget($docResult, 'files', '');
             $lib   = $this->doc->getLibByID($libID);
-            if($docResult['status'] == 'exists')
-            {
-                return $this->send(array('result' => 'fail', 'message' => sprintf($this->lang->duplicate, $this->lang->doc->common), 'locate' => $this->createLink('doc', 'view', "docID=$docID")));
-            }
 
             $fileAction = '';
             if(!empty($files)) $fileAction = $this->lang->addFiles . join(',', $files) . "\n";
diff --git a/module/doc/model.php b/module/doc/model.php
index 7875096fc4..59a71fd182 100644
--- a/module/doc/model.php
+++ b/module/doc/model.php
@@ -888,13 +888,6 @@ class docModel extends model
         if(empty($doc->lib) and strpos($doc->module, '_') !== false) list($doc->lib, $doc->module) = explode('_', $doc->module);
         if(empty($doc->lib)) return dao::$errors['lib'] = sprintf($this->lang->error->notempty, $this->lang->doc->lib);
 
-        if($doc->title)
-        {
-            $condition = "lib = '$doc->lib' AND module = $doc->module";
-            $result    = $this->loadModel('common')->removeDuplicate('doc', $doc, $condition);
-            if($result['stop']) return array('status' => 'exists', 'id' => $result['duplicate']);
-        }
-
         /* Fix bug #2929. strip_tags($this->post->contentMarkdown, $this->config->allowedTags)*/
         $lib = $this->getLibByID($doc->lib);
         $doc = $this->loadModel('file')->processImgURL($doc, $this->config->doc->editor->create['id'], $this->post->uid);