diff --git a/htdocs/core/conf.class.php b/htdocs/core/conf.class.php
index a2c7e71aa22..8ed545028e9 100644
--- a/htdocs/core/conf.class.php
+++ b/htdocs/core/conf.class.php
@@ -83,7 +83,7 @@ class Conf
 		dol_syslog("Conf::setValues");
 		
 		// Add root path
-		$this->include_path[] = DOL_DOCUMENT_ROOT;
+		$this->include_path[] = DOL_DOCUMENT_ROOT."/";
 		// Add library path
 		$this->include_path[] = DOL_DOCUMENT_ROOT."/lib/";