diff --git a/app/pe/pe_semestretag.py b/app/pe/pe_semestretag.py
index 20be15c4..2db20732 100644
--- a/app/pe/pe_semestretag.py
+++ b/app/pe/pe_semestretag.py
@@ -256,7 +256,7 @@ class SemestreTag(pe_tagtable.TableTag):
         # Si le module ne fait pas partie des UE capitalisées
         if modimpl.module.ue.id not in ue_capitalisees_id:
             note = self.nt.get_etud_mod_moy(modimpl_id, etudid)  # lecture de la note
-            coeff = modimpl.module.coefficient  # le coeff
+            coeff = modimpl.module.coefficient or 0.0  # le coeff (! non compatible BUT)
             coeff_norm = (
                 coeff / self.somme_coeffs if self.somme_coeffs != 0 else 0
             )  # le coeff normalisé