diff --git a/src/lang/french.txt b/src/lang/french.txt
index bd3fb68d1b..863c011616 100644
--- a/src/lang/french.txt
+++ b/src/lang/french.txt
@@ -1834,6 +1834,9 @@ STR_CONFIG_SETTING_SERVINT_AIRCRAFT_HELPTEXT                    :Définit l'inte
 STR_CONFIG_SETTING_SERVINT_SHIPS                                :Intervalle d'entretien par défaut pour les navires{NBSP}: {STRING}
 STR_CONFIG_SETTING_SERVINT_SHIPS_HELPTEXT                       :Définit l'intervalle d'entretien par défaut des nouveaux navires, si aucun intervalle d'entretien n'est défini pour le véhicule
 ###length 3
+STR_CONFIG_SETTING_SERVINT_VALUE_DAYS                           :{COMMA}{NBSP}Jour{P 0 "" s}
+STR_CONFIG_SETTING_SERVINT_VALUE_MINUTES                        :{COMMA}{NBSP}Minute{P 0 "" s}
+STR_CONFIG_SETTING_SERVINT_VALUE_PERCENTAGE                     :{COMMA}{NBSP}%
 
 ###setting-zero-is-special
 STR_CONFIG_SETTING_SERVINT_DISABLED                             :Désactivé
diff --git a/src/lang/norwegian_bokmal.txt b/src/lang/norwegian_bokmal.txt
index 0908daba82..6a8446158b 100644
--- a/src/lang/norwegian_bokmal.txt
+++ b/src/lang/norwegian_bokmal.txt
@@ -1835,6 +1835,9 @@ STR_CONFIG_SETTING_SERVINT_AIRCRAFT_HELPTEXT                    :Angi standard v
 STR_CONFIG_SETTING_SERVINT_SHIPS                                :Standard vedlikeholdsintervall for skip: {STRING}
 STR_CONFIG_SETTING_SERVINT_SHIPS_HELPTEXT                       :Angi standard vedlikeholdsintervall for nye skip, hvis det ikke er angitt noe vedlikeholdsintervall for fartøyet
 ###length 3
+STR_CONFIG_SETTING_SERVINT_VALUE_DAYS                           :{COMMA}{NBSP}Dag{P 0 "" er}
+STR_CONFIG_SETTING_SERVINT_VALUE_MINUTES                        :{COMMA}{NBSP}Minutt{P 0 "" er}
+STR_CONFIG_SETTING_SERVINT_VALUE_PERCENTAGE                     :{COMMA}{NBSP}%
 
 ###setting-zero-is-special
 STR_CONFIG_SETTING_SERVINT_DISABLED                             :Deaktivert
diff --git a/src/lang/portuguese.txt b/src/lang/portuguese.txt
index 23aff750e7..d4ed990215 100644
--- a/src/lang/portuguese.txt
+++ b/src/lang/portuguese.txt
@@ -1834,6 +1834,9 @@ STR_CONFIG_SETTING_SERVINT_AIRCRAFT_HELPTEXT                    :Definir o inter
 STR_CONFIG_SETTING_SERVINT_SHIPS                                :Intervalo de serviço para navios por omissão: {STRING}
 STR_CONFIG_SETTING_SERVINT_SHIPS_HELPTEXT                       :Definir o intervalo de manutenção por omissão para novos navios, se não for configurado um intervalo de manutenção explícito para o veículo
 ###length 3
+STR_CONFIG_SETTING_SERVINT_VALUE_DAYS                           :{COMMA}{NBSP}Dia{P 0 "" s}
+STR_CONFIG_SETTING_SERVINT_VALUE_MINUTES                        :{COMMA}{NBSP}Minuto{P 0 "" s}
+STR_CONFIG_SETTING_SERVINT_VALUE_PERCENTAGE                     :{COMMA}{NBSP}%
 
 ###setting-zero-is-special
 STR_CONFIG_SETTING_SERVINT_DISABLED                             :Desativado