diff --git a/install/dist/lib/debian60.lib.php b/install/dist/lib/debian60.lib.php
index 88ba5d2b0d19e76f39432d338c3925d2216850ee..3430478782b68ab85a6dfd32925c88e1f8c5f9ca 100644
--- a/install/dist/lib/debian60.lib.php
+++ b/install/dist/lib/debian60.lib.php
@@ -95,8 +95,8 @@ class installer extends installer_base {
 		$configfile = 'dovecot-sql.conf';
 		if(is_file($config_dir.'/'.$configfile)){
 			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
+			chmod($config_dir.'/'.$configfile.'~', 0400);
 		}
-		chmod($config_dir.'/'.$configfile.'~', 0400);
 		$content = rf('tpl/debian6_dovecot-sql.conf.master');
 		$content = str_replace('{mysql_server_ispconfig_user}',$conf['mysql']['ispconfig_user'],$content);
 		$content = str_replace('{mysql_server_ispconfig_password}',$conf['mysql']['ispconfig_password'], $content);
@@ -126,4 +126,4 @@ class installer extends installer_base {
     }
 }
 
-?>
\ No newline at end of file
+?>