diff --git a/htdocs/langs/en_US/mrp.lang b/htdocs/langs/en_US/mrp.lang
index 82cf7c38012..6c8af64f69a 100644
--- a/htdocs/langs/en_US/mrp.lang
+++ b/htdocs/langs/en_US/mrp.lang
@@ -119,3 +119,5 @@ BomCantAddChildBom=The nomenclature %s is already present in the tree leading to
 BOMNetNeeds = BOM Net Needs
 BOMProductsList=BOM's products
 BOMServicesList=BOM's services
+Manufacturing=Manufacturing
+Disassemble=Disassemble