diff --git a/htdocs/lib/agenda.lib.php b/htdocs/lib/agenda.lib.php
index 92765d92644..13239d06e8f 100644
--- a/htdocs/lib/agenda.lib.php
+++ b/htdocs/lib/agenda.lib.php
@@ -311,12 +311,14 @@ function agenda_prepare_head()
 	$head[$h][1] = $langs->trans("Export");
 	$head[$h][2] = 'xcal';
 	$h++;
-	
-	$head[$h][0] = DOL_URL_ROOT."/admin/agenda_extsites.php";
-	$head[$h][1] = $langs->trans("ExtSites");
-	$head[$h][2] = 'extsites';
-	$h++;
-	
+
+	if ($conf->global->MAIN_FEATURES_LEVEL >= 2)   // In dev version only for the moment
+	{
+    	$head[$h][0] = DOL_URL_ROOT."/admin/agenda_extsites.php";
+    	$head[$h][1] = $langs->trans("ExtSites");
+    	$head[$h][2] = 'extsites';
+    	$h++;
+	}
 
 	return $head;
 }