diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.fr.md
index b039d23e2..fd61c5d92 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.fr.md
@@ -65,7 +65,7 @@ Continuer
 Nouvelle proposition de plan d'étude   
 
 
-*MECA-CLAS-Prop1-n2* 
+*MECA-CLAS-Prop2-n2* 
 
 _Commencer par vos 3 initiales suivies des deux lettres de votre langue natale (XXX-YY)_
 
@@ -92,7 +92,7 @@ Continuer
 Nouvelle proposition de plan d'étude   
   
 
-*MECA-CLAS-Prop1-n3*  
+*MECA-CLAS-Prop3-n2*  
 
 
 Continuer