diff --git a/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md b/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md
index 6a67f0b1f..570254846 100644
--- a/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md
+++ b/12.temporary_ins/70.wave-optics/10.interferences/cheatsheet.fr.md
@@ -1,11 +1,11 @@
 ---
 title: Le phénomène d'interférences
 published: true
-routable: false
+routable: true
 visible: false
-lessons:
-    - slug: 
-      order: 
+lessons: 
+    - slug: interferences-diffraction
+      order: 2
 ---
 
 !!!! *COURS EN CONSTRUCTION :* <br>