diff --git a/setup/inc/class.setup.inc.php b/setup/inc/class.setup.inc.php
index 29a0e4d710..aaeced847a 100644
--- a/setup/inc/class.setup.inc.php
+++ b/setup/inc/class.setup.inc.php
@@ -616,7 +616,7 @@ class setup
 			//echo '<br>' . $setup_info[$appname]['version'];
 			if($setup_info[$appname]['tables'])
 			{
-				$tables = implode(',',$setup_info[$appname]['tables']);
+				$tables = implode(',', (array)$setup_info[$appname]['tables']);
 			}
 			$this->db->update($this->applications_table,array(
 					'app_enabled'	=> $setup_info[$appname]['enable'],
diff --git a/setup/index.php b/setup/index.php
index 9c2acd2206..0e03e085de 100644
--- a/setup/index.php
+++ b/setup/index.php
@@ -356,7 +356,6 @@ switch($GLOBALS['egw_info']['setup']['stage']['db'])
 						{
 							echo '<p align="center">'.lang('backup started, this might take a few minutes ...')."</p>\n".str_repeat(' ',4096);
 							$db_backup->backup($f);
-							fclose($f);
 							echo '<p align="center">'.lang('backup finished')."</p>\n";
 						}
 						else	// backup failed ==> dont start the upgrade