diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index 7adcd79d364..34fc77bbc34 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -205,6 +205,17 @@ class Conf
 
 		    $db->free($resql);
 		}
+	        // Include local constants files and fetch their values to the corresponding database constants
+	        if(! empty($this->global->LOCAL_CONSTS_FILES)) {
+	            $filesList = explode(":", $this->global->LOCAL_CONSTS_FILES);
+	            foreach ($filesList as $file) {
+	                $file=dol_sanitizeFileName($file);
+	                include_once DOL_DOCUMENT_ROOT . "/$file/{$file}_consts.php";
+	                foreach ($file2bddconsts as $key=>$value) {
+	                    $conf->global->$key=constant($value);
+	                }
+	            }
+	        }
 		//var_dump($this->modules);
 		//var_dump($this->modules_parts['theme']);