diff --git a/slides/cours_9.md b/slides/cours_9.md
index 63a2937aebbc253e124842143fbaa196dd191d54..c3869957da2adf8eccaf18836254515134f7fcb2 100644
--- a/slides/cours_9.md
+++ b/slides/cours_9.md
@@ -1,5 +1,5 @@
 ---
-title: "Backtracking et piles"
+title: "Backtracking, piles, et assertions"
 date: "2023-11-28"
 ---