diff --git a/module/upgrade/model.php b/module/upgrade/model.php
index ba8eb07128..4f20f43d42 100644
--- a/module/upgrade/model.php
+++ b/module/upgrade/model.php
@@ -4831,7 +4831,7 @@ class upgradeModel extends model
         /* Project linked objects. */
         $this->dao->update(TABLE_TASK)->set('project')->eq($projectID)->where('execution')->in($sprintIdList)->exec();
         $this->dao->update(TABLE_BUILD)->set('project')->eq($projectID)->where('execution')->in($sprintIdList)->andWhere('project')->eq(0)->exec();
-        $this->dao->update(TABLE_BUG)->set('project')->eq($projectID)->where('execution')->in($sprintIdList)->andWhere('project')->eq(0)->exec();
+        $this->dao->update(TABLE_BUG)->set('project')->eq($projectID)->where('execution')->in($sprintIdList)->exec();
         $this->dao->update(TABLE_DOC)->set('project')->eq($projectID)->set('type')->eq('execution')->where("lib IN(SELECT id from " . TABLE_DOCLIB . " WHERE type = 'project' and execution " . helper::dbIN($sprintIdList) . ')')->exec();
         $this->dao->update(TABLE_DOCLIB)->set('project')->eq($projectID)->where('type')->eq('execution')->andWhere('execution')->in($sprintIdList)->exec();
         $this->dao->update(TABLE_TESTTASK)->set('project')->eq($projectID)->where('execution')->in($sprintIdList)->exec();