diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index c1c30c6826e..afb1767514e 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -167,7 +167,7 @@ class Conf
 							if (! isset($this->modules_parts[$partname]) || ! is_array($this->modules_parts[$partname])) { $this->modules_parts[$partname] = array(); }
 							$arrValue = dol_json_decode($value,true);
 							if (is_array($arrValue) && ! empty($arrValue)) $value = $arrValue;
-							else if (in_array($partname,array('login','menus','triggers'))) $value = '/'.$modulename.'/core/'.$partname.'/';
+							else if (in_array($partname,array('login','menus','substitutions','triggers'))) $value = '/'.$modulename.'/core/'.$partname.'/';
 							else if (in_array($partname,array('models'))) $value = '/'.$modulename.'/';
 							else if ($value == 1) $value = '/'.$modulename.'/core/modules/'.$partname.'/';
 							$this->$varname = array_merge($this->$varname, array($modulename => $value));  // TODO deprecated