diff --git a/app/views/scodoc.py b/app/views/scodoc.py
index b3ed1aa1e..8c9051b9a 100644
--- a/app/views/scodoc.py
+++ b/app/views/scodoc.py
@@ -367,7 +367,9 @@ def get_logo(name: str, dept_id: int):
 @bp.route("/ScoDoc/ue_colors_css/<int:formation_id>/<int:semestre_idx>")
 def ue_colors_css(formation_id: int, semestre_idx: int):
     """Feuille de style pour les couleurs d'UE"""
-    ues = UniteEns.query.filter_by(formation_id=formation_id, semestre_idx=semestre_idx)
+    ues = UniteEns.query.filter_by(
+        formation_id=formation_id, semestre_idx=semestre_idx
+    ).order_by(UniteEns.numero)
     txt = (
         ":root{\n"
         + "\n".join(