diff --git a/app/but/jury_but.py b/app/but/jury_but.py
index 071352c0a4..8371340e7d 100644
--- a/app/but/jury_but.py
+++ b/app/but/jury_but.py
@@ -386,7 +386,9 @@ class DecisionsProposeesAnnee(DecisionsProposees):
     def comp_formsemestres(
         self, formsemestre: FormSemestre
     ) -> tuple[FormSemestre, FormSemestre]:
-        "les deux formsemestres de l'année scolaire à laquelle appartient formsemestre"
+        """les deux formsemestres de l'année scolaire à laquelle appartient formsemestre."""
+        if not formsemestre.formation.is_apc():  # garde fou
+            return None, None
         if formsemestre.semestre_id % 2 == 0:
             other_semestre_id = formsemestre.semestre_id - 1
         else:
@@ -420,7 +422,7 @@ class DecisionsProposeesAnnee(DecisionsProposees):
             (self.formsemestre_impair, self.res_impair),
             (self.formsemestre_pair, self.res_pair),
         ):
-            if formsemestre is None:
+            if (formsemestre is None) or (not formsemestre.formation.is_apc()):
                 ues = []
             else:
                 formation: Formation = formsemestre.formation