diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index 703504eaf5c..10303a5c9f5 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -94,3 +94,4 @@ Filter=Filter
 RemoveFilter=Remove filter
 ChartGenerated=Chart generated
 ChartNotGenerated=Chart not generated
+Duration=Duration
diff --git a/htdocs/langs/fr_FR/main.lang b/htdocs/langs/fr_FR/main.lang
index c801b592055..d98fc0ed3f5 100644
--- a/htdocs/langs/fr_FR/main.lang
+++ b/htdocs/langs/fr_FR/main.lang
@@ -93,4 +93,5 @@ ActionsToDo=Actions 
 Filter=Filtre
 RemoveFilter=Supprimer filtre
 ChartGenerated=Graphiques générés
-ChartNotGenerated=Graphique non généré
\ No newline at end of file
+ChartNotGenerated=Graphique non généré
+Duration=Durée
\ No newline at end of file