diff --git a/htdocs/langs/en_US/interventions.lang b/htdocs/langs/en_US/interventions.lang
index 3f7c84cd23f370654b0a52b2b0386fffe9fcce78..15415a7fcd5eb624064525033ba79e7700f67f99 100644
--- a/htdocs/langs/en_US/interventions.lang
+++ b/htdocs/langs/en_US/interventions.lang
@@ -53,7 +53,7 @@ UseDateWithoutHourOnFichinter=Hides hours and minutes off the date field for int
 InterventionStatistics=Statistics of interventions
 NbOfinterventions=Nb of intervention cards
 NumberOfInterventionsByMonth=Nb of intervention cards by month (date of validation)
-AmountOfInteventionNotIncludedByDefault=Amount of intervention is not included by default into profit. Add option PROJECT_INCLUDE_INTERVENTION_AMOUNT_IN_PROFIT to 1 into home-setup-other to include them.
+AmountOfInteventionNotIncludedByDefault=Amount of intervention is not included by default into profit (in most cases, timesheets are used to count time spent). Add option PROJECT_INCLUDE_INTERVENTION_AMOUNT_IN_PROFIT to 1 into home-setup-other to include them.
 ##### Exports #####
 InterId=Intervention id
 InterRef=Intervention ref.