diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 004167022527de3c9f3a0ec91ff838f9e49fbba9..68c8efc976e61af2c14f4dac8b7841fcc18514fd 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -916,7 +916,7 @@ class installer_base extends stdClass {
 
 		if (is_dir($config_dir)) {
 			if(is_file($config_dir.'/'.$jk_init)) copy($config_dir.'/'.$jk_init, $config_dir.'/'.$jk_init.'~');
-			if(is_file($config_dir.'/'.$jk_chrootsh.'.master')) copy($config_dir.'/'.$jk_chrootsh.'.master', $config_dir.'/'.$jk_chrootsh.'~');
+			if(is_file($config_dir.'/'.$jk_chrootsh)) copy($config_dir.'/'.$jk_chrootsh, $config_dir.'/'.$jk_chrootsh.'~');
 
 			if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$jk_init.'.master')) {
 				copy($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$jk_init.'.master', $config_dir.'/'.$jk_init);