diff --git a/htdocs/langs/en_US/interventions.lang b/htdocs/langs/en_US/interventions.lang
index b92474e7f91..f638dd26835 100644
--- a/htdocs/langs/en_US/interventions.lang
+++ b/htdocs/langs/en_US/interventions.lang
@@ -69,4 +69,9 @@ GenerateInter=Generate intervention
 FichinterNoContractLinked=Intervention %s has been created without a linked contract.
 ErrorFicheinterCompanyDoesNotExist=Company does not exist. Intervention has not been created.
 NextDateToIntervention=Date for next intervention generation
-NoIntervention=No intervention
\ No newline at end of file
+NoIntervention=No intervention
+##### Contact types #####
+TypeContact_fichinter_internal_INTERREPFOLL=Responsible for intervention follow-up
+TypeContact_fichinter_internal_INTERVENING=Intervenant
+TypeContact_fichinter_external_BILLING=Contact customer invoicing intervention
+TypeContact_fichinter_external_CUSTOMER=Customer contact of intervention follow-up