diff --git a/libfic/exercice.go b/libfic/exercice.go
index 47b3c3dc..26894368 100644
--- a/libfic/exercice.go
+++ b/libfic/exercice.go
@@ -283,7 +283,9 @@ func (e Exercice) GetLevel() (int, error) {
 	nb := 1
 	for dep != nil {
 		nb += 1
-		if edep, err := GetExercice(*dep); err != nil {
+		if nb > 10 || *dep == e.Id {
+			return nb, errors.New("Exceed number of levels")
+		} else if edep, err := GetExercice(*dep); err != nil {
 			return nb, err
 		} else {
 			dep = edep.Depend