diff --git a/application/modules/default/models/Spam.php b/application/modules/default/models/Spam.php
index dc2ff7e32..aaa5994b7 100644
--- a/application/modules/default/models/Spam.php
+++ b/application/modules/default/models/Spam.php
@@ -1,71 +1,71 @@
 <?php
 
 /**
  *  ocs-webserver
  *
  *  Copyright 2016 by pling GmbH.
  *
  *    This file is part of ocs-webserver.
  *
  *    This program is free software: you can redistribute it and/or modify
  *    it under the terms of the GNU Affero General Public License as
  *    published by the Free Software Foundation, either version 3 of the
  *    License, or (at your option) any later version.
  *
  *    This program is distributed in the hope that it will be useful,
  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *    GNU Affero General Public License for more details.
  *
  *    You should have received a copy of the GNU Affero General Public License
  *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  * Created: 31.05.2017
  */
 class Default_Model_Spam
 {
 
     const SPAM_THRESHOLD = 1;
 
     /**
      * naive approach for spam detection
      * @todo: define a list of stop words
      *
      * @param array $project_data
      *
      * @return bool
      */
     public static function hasSpamMarkers($project_data)
     {
         $sql = "SELECT spam_key_word FROM spam_keywords WHERE spam_key_is_active = 1 AND spam_key_is_deleted = 0";
         $keywords = Zend_Db_Table::getDefaultAdapter()->fetchCol($sql);
 
         $needles = implode('|', $keywords);
 
         $haystack = implode(" ", array($project_data['title'], $project_data['description']));
 
-        if(preg_match("/\b({$needles})\b/i", $haystack)){
+        if(preg_match("/\b({$needles})s?\b/i", $haystack)){
             return true;
         }
 
         return false;
     }
 
     public function fetchSpamCandidate()
     {
         $sql = "
             SELECT *
             FROM `stat_projects`
             WHERE `stat_projects`.`amount_reports` >= :threshold AND `stat_projects`.`status` = 100
             ORDER BY `stat_projects`.`changed_at` DESC, `stat_projects`.`created_at` DESC, `stat_projects`.`amount_reports` DESC
         ";
 
         $result = Zend_Db_Table::getDefaultAdapter()->query($sql, array('threshold' => self::SPAM_THRESHOLD));
         if ($result->rowCount() > 0) {
             return $result->fetchAll();
         } else {
             return array();
         }
     }
 
 }
\ No newline at end of file