diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index a21b2a9d355..bfcbb5a2010 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -262,6 +262,7 @@ DateBuild=Report build date
 DatePayment=Date of payment
 DateApprove=Approving date
 DateApprove2=Approving date (second approval)
+RegistrationDate=Registration date
 UserCreation=Creation user
 UserModification=Modification user
 UserCreationShort=Creat. user