diff --git a/UI/Scheduler/English.lproj/Localizable.strings b/UI/Scheduler/English.lproj/Localizable.strings
index 99a50b8e1..d602ba943 100644
--- a/UI/Scheduler/English.lproj/Localizable.strings
+++ b/UI/Scheduler/English.lproj/Localizable.strings
@@ -268,6 +268,8 @@ validate_endbeforestart    = "Enddate is before startdate!";
 "Week View" = "Week View";
 "Month View" = "Month View";
 
+"eventPartStatModificationError" = "Your participation status at the event could not be modified.";
+
 /* confirmations */
 "appointmentDeleteConfirmation" = "Erasing this event will not be reversible.\\nDo you want to confirm anyway?";
 "taskDeleteConfirmation" = "Erasing this task will be nonreversible.\\nDo you want to confirm anyway?";
diff --git a/UI/Scheduler/French.lproj/Localizable.strings b/UI/Scheduler/French.lproj/Localizable.strings
index 54f0637b5..320ad149b 100644
--- a/UI/Scheduler/French.lproj/Localizable.strings
+++ b/UI/Scheduler/French.lproj/Localizable.strings
@@ -276,6 +276,8 @@ validate_endbeforestart    = "La date de fin est avant la date de début !";
 "Week View" = "Par semaine";
 "Month View" = "Par mois";
 
+"eventPartStatModificationError" = "Votre état de participation à l'événement n'a pas pu être modifié.";
+
 /* menu */
 "New Event..." = "Nouvel événement...";
 "New Task..." = "Nouvelle tâche...";