diff --git a/htdocs/api/class/api.class.php b/htdocs/api/class/api.class.php
index 55b728d2a80..dcda8255e7c 100644
--- a/htdocs/api/class/api.class.php
+++ b/htdocs/api/class/api.class.php
@@ -58,7 +58,7 @@ class DolibarrApi
         $this->r = new Restler($production_mode, $refreshCache);
         $urlwithouturlroot=preg_replace('/'.preg_quote(DOL_URL_ROOT,'/').'$/i','',trim($dolibarr_main_url_root));
         $urlwithroot=$urlwithouturlroot.DOL_URL_ROOT; // This is to use external domain name found into config file
-	$this->r->setBaseUrls($urlwithroot);
+	$this->r->setBaseUrls(DOL_MAIN_URL_ROOT, $urlwithroot);
         $this->r->setAPIVersion(1);
     }