diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/50.n4/10.es/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/50.n4/10.es/10.main/textbook.fr.md
index 970f408d0..08a707f0a 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/50.n4/10.es/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/50.n4/10.es/10.main/textbook.fr.md
@@ -8,7 +8,7 @@ lessons:
       order: 1
     - slug: mecanica-clasica-234-panorama
       order: 3
-    - slug: mecanica-clasica-n4-exchange
+    - slug: classical-mechanics-n4-exchange
       order: 1
 ---