diff --git a/admin/sync/exercice_keys.go b/admin/sync/exercice_keys.go
index ee7cb9ba..0b11c11d 100644
--- a/admin/sync/exercice_keys.go
+++ b/admin/sync/exercice_keys.go
@@ -169,6 +169,10 @@ func buildKeyFlag(exercice fic.Exercice, flag ExerciceFlag, flagline int, defaul
 			}
 			choice.Label = prep + choice.Label
 
+			if !flag.CaseSensitive {
+				val = strings.ToLower(val)
+			}
+
 			choices = append(choices, fic.FlagChoice{
 				Label: choice.Label,
 				Value: val,