diff --git a/admin/static/views/settings.html b/admin/static/views/settings.html
index 016ba7e4..635a923a 100644
--- a/admin/static/views/settings.html
+++ b/admin/static/views/settings.html
@@ -153,7 +153,7 @@
       <label class="custom-control custom-checkbox">
 	<input class="custom-control-input" type="checkbox" ng-model="config.enableExerciceDepend">
 	<span class="custom-control-label">Activer les dépendances des exercices</span>
-	<input type="text" class="form-control form-control-sm" id="duration" ng-model="config.unlockedChallengeDepth" ng-disabled="!config.enableExerciceDepend" integer>
+	<input type="text" class="form-control form-control-sm" id="duration" ng-model="config.unlockedChallengeDepth" ng-disabled="!config.enableExerciceDepend" title="-1 : Désactivé ; 0: activé ; 1,2,3 : débloque 1,2,3,... exercices supplémentaires après un challenge validé" integer>
       </label>
     </div>