diff --git a/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/20.overview/cheatsheet.fr.md b/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/20.overview/cheatsheet.fr.md
index 5dcec6392..8375a8f48 100644
--- a/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/20.overview/cheatsheet.fr.md
+++ b/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/20.overview/cheatsheet.fr.md
@@ -10,4 +10,6 @@ lessons:
      order: 1
 ---
 
+### Des ensembles aux systèmes : niveau 1
+
 #### Tests écran smartphone de lisibilité figures