diff --git a/formulaires/editer_block.php b/formulaires/editer_block.php
index 4896f780ee93c44467ecfd0cb52785c1f235b516..860134f33327499f97403a7fc619da57bc2fc8fa 100644
--- a/formulaires/editer_block.php
+++ b/formulaires/editer_block.php
@@ -56,7 +56,7 @@ function formulaires_editer_block_charger_dist($id_block = 'new', $objet = null,
 	} else {
 		$id_blocktype = _request('id_blocktype');
 	}
-	if (!$objet || !(int)$id_objet) {
+	if (!$objet || !(int)$id_objet || !autoriser('modifier', $objet, $id_objet)) {
 		return null;
 	}