diff --git a/01.curriculum/01.physics-chemistry-biology/04.Niv4/03.geometrical-optics/01.ray-tracing/default.fr.md b/01.curriculum/01.physics-chemistry-biology/04.Niv4/03.geometrical-optics/01.ray-tracing/default.fr.md
deleted file mode 100644
index be528b0e2..000000000
--- a/01.curriculum/01.physics-chemistry-biology/04.Niv4/03.geometrical-optics/01.ray-tracing/default.fr.md
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@@ -1,5 +0,0 @@
----
-title: 'Les techniques du "ray tracing"'
-slug: ray-tracing
----
-