diff --git a/app/but/jury_but.py b/app/but/jury_but.py
index 02f18dffa1..fc4faf20e1 100644
--- a/app/but/jury_but.py
+++ b/app/but/jury_but.py
@@ -865,11 +865,16 @@ class DecisionsProposeesAnnee(DecisionsProposees):
                 self.etud.id, self.formsemestre.id
             )
             for dec_ue in self.decisions_ues.values():
-                if dec_ue.formsemestre.id == self.formsemestre.id:
+                if (
+                    dec_ue
+                    and self.formsemestre
+                    and dec_ue.formsemestre.id == self.formsemestre.id
+                ):
                     dec_ue.erase()
         else:
             for dec_ue in self.decisions_ues.values():
-                dec_ue.erase()
+                if dec_ue:
+                    dec_ue.erase()
 
             if self.formsemestre_impair:
                 ScolarAutorisationInscription.delete_autorisation_etud(