diff --git a/htdocs/core/actions_addupdatedelete.inc.php b/htdocs/core/actions_addupdatedelete.inc.php
index de4b9d86da1..2cc477520ea 100644
--- a/htdocs/core/actions_addupdatedelete.inc.php
+++ b/htdocs/core/actions_addupdatedelete.inc.php
@@ -236,7 +236,9 @@ if ($action == 'update' && !empty($permissiontoadd)) {
 
 		if ($conf->categorie->enabled) {
 			$categories = GETPOST('categories', 'array');
-			$object->setCategories($categories);
+			if (method_exists($object, 'setCategories')) {
+				$object->setCategories($categories);
+			}
 		}
 	}