diff --git a/htdocs/langs/en_US/categories.lang b/htdocs/langs/en_US/categories.lang
index 29e08f66541..cf0de898bdb 100644
--- a/htdocs/langs/en_US/categories.lang
+++ b/htdocs/langs/en_US/categories.lang
@@ -96,4 +96,5 @@ ChooseCategory=Choose category
 StocksCategoriesArea=Warehouse Categories
 ActionCommCategoriesArea=Event Categories
 WebsitePagesCategoriesArea=Page-Container Categories
+KnowledgemanagementsCategoriesArea=KM article Categories
 UseOrOperatorForCategories=Use 'OR' operator for categories