diff --git a/htdocs/product/stock/class/entrepot.class.php b/htdocs/product/stock/class/entrepot.class.php
index 716c34f6077..1e664f2cd8a 100644
--- a/htdocs/product/stock/class/entrepot.class.php
+++ b/htdocs/product/stock/class/entrepot.class.php
@@ -852,6 +852,7 @@ class Entrepot extends CommonObject
 	 * Existing categories are left untouch.
 	 *
 	 * @param int[]|int $categories Category or categories IDs
+	 * @return void
 	 */
 	public function setCategories($categories) {
 		// Handle single category