diff --git a/htdocs/categories/class/categorie.class.php b/htdocs/categories/class/categorie.class.php
index 05b1822f45f..14cdfe84783 100644
--- a/htdocs/categories/class/categorie.class.php
+++ b/htdocs/categories/class/categorie.class.php
@@ -989,7 +989,7 @@ class Categorie extends CommonObject
 					$categories[$i]['array_options'] = $category_static->array_options;
 
 					// multilangs
-					if (!empty($conf->global->MAIN_MULTILANGS)) {
+					if (!empty($conf->global->MAIN_MULTILANGS) && isset($category_static->multilangs)) {
 						$categories[$i]['multilangs'] = $category_static->multilangs;
 					}
 				}