diff --git a/htdocs/contact/perso.php b/htdocs/contact/perso.php
index c63b26604eb..7c5a0f89ef1 100644
--- a/htdocs/contact/perso.php
+++ b/htdocs/contact/perso.php
@@ -198,8 +198,8 @@ else
     {
         print '<tr><td>'.$langs->trans("DateToBirth").'</td><td colspan="3">'.dol_print_date($contact->birthday,"day");
 		print ' (';
-        if ($contact->birthday_alert) print 'alerte anniversaire active';
-        else print 'alerte anniversaire inactive';
+        if ($contact->birthday_alert) print $langs->trans("BirthdayAlertOn");
+        else print $langs->trans("BirthdayAlertOff");
         print ')</td>';
     }
     else
diff --git a/htdocs/langs/ca_ES/other.lang b/htdocs/langs/ca_ES/other.lang
index 09b0894ccd2..23075bb847b 100644
--- a/htdocs/langs/ca_ES/other.lang
+++ b/htdocs/langs/ca_ES/other.lang
@@ -24,6 +24,8 @@ Tools = Utilitats
 Birthday = Aniversari
 BirthdayDate = Data aniversari
 DateToBirth = Data de naiximent
+BirthdayAlertOn = alerta aniversari activada
+BirthdayAlertOff = alerta aniversari desactivada
 Notify_NOTIFY_VAL_FICHINTER = Validació fitxa intervenció
 Notify_NOTIFY_VAL_FAC = Validació factura
 NbOfAttachedFiles = Número arxius/documents adjunts
diff --git a/htdocs/langs/en_US/other.lang b/htdocs/langs/en_US/other.lang
index 086bbbead5f..c8f4627bbe4 100644
--- a/htdocs/langs/en_US/other.lang
+++ b/htdocs/langs/en_US/other.lang
@@ -24,6 +24,8 @@ Tools=Tools
 Birthday=Birthday
 BirthdayDate=Birthday
 DateToBirth=Date to birth
+BirthdayAlertOn = birthday alert active
+BirthdayAlertOff = birthday alert inactive
 Notify_NOTIFY_VAL_FICHINTER=Validate intervention
 Notify_NOTIFY_VAL_FAC=Validate bill
 NbOfAttachedFiles=Number of attached files/documents
diff --git a/htdocs/langs/es_ES/other.lang b/htdocs/langs/es_ES/other.lang
index bd285b0f418..32c1809825d 100644
--- a/htdocs/langs/es_ES/other.lang
+++ b/htdocs/langs/es_ES/other.lang
@@ -24,6 +24,8 @@ Tools = Utilidades
 Birthday = Aniversario
 BirthdayDate = Fecha aniversario
 DateToBirth = Fecha de nacimiento
+BirthdayAlertOn = alerta aniversario activada
+BirthdayAlertOff = alerta aniversario desactivada
 Notify_NOTIFY_VAL_FICHINTER = Validación ficha intervención
 Notify_NOTIFY_VAL_FAC = Validación factura
 NbOfAttachedFiles = Número archivos/documentos adjuntos
diff --git a/htdocs/langs/fr_FR/other.lang b/htdocs/langs/fr_FR/other.lang
index c60d0a0a0aa..aeb1994ba8e 100644
--- a/htdocs/langs/fr_FR/other.lang
+++ b/htdocs/langs/fr_FR/other.lang
@@ -24,6 +24,8 @@ Tools=Outils
 Birthday=Anniversaire
 BirthdayDate=Date anniversaire
 DateToBirth=Date de naissance
+BirthdayAlertOn = alerte anniversaire active
+BirthdayAlertOff = alerte anniversaire inactive
 Notify_NOTIFY_VAL_FICHINTER=Validation fiche intervention
 Notify_NOTIFY_VAL_FAC=Validation facture
 NbOfAttachedFiles=Nombre de fichiers/documents liés