diff --git a/htdocs/langs/en_US/mrp.lang b/htdocs/langs/en_US/mrp.lang
index 3f1aac53340..74bed0d9186 100644
--- a/htdocs/langs/en_US/mrp.lang
+++ b/htdocs/langs/en_US/mrp.lang
@@ -27,7 +27,7 @@ ConfirmCloneBillOfMaterials=Are you sure you want to clone the bill of materials
 ConfirmCloneMo=Are you sure you want to clone the Manufacturing Order %s ?
 ManufacturingEfficiency=Manufacturing efficiency
 ConsumptionEfficiency=Consumption efficiency
-ValueOfMeansLoss=Value of 0.95 means an average of 5%% of loss during the production
+ValueOfMeansLoss=Value of 0.95 means an average of 5%% of loss during the manufacturing or the disassembly
 ValueOfMeansLossForProductProduced=Value of 0.95 means an average of 5%% of loss of produced product
 DeleteBillOfMaterials=Delete Bill Of Materials
 DeleteMo=Delete Manufacturing Order