diff --git a/app/comp/moy_mod.py b/app/comp/moy_mod.py
index 41000fd4bd..f21e6acdd9 100644
--- a/app/comp/moy_mod.py
+++ b/app/comp/moy_mod.py
@@ -36,6 +36,7 @@ import pandas as pd
 from pandas.core.frame import DataFrame
 
 from app import db
+from app import log
 from app import models
 from app.models import ModuleImpl, Evaluation, EvaluationUEPoids
 from app.scodoc import sco_utils as scu
@@ -79,7 +80,11 @@ def check_moduleimpl_conformity(
     if nb_ues == 0:
         return False  # situation absurde (pas d'UE)
     if len(modules_coefficients) != nb_ues:
-        raise ValueError("check_moduleimpl_conformity: nb ue incoherent")
+        # bug ?
+        log(
+            "check_moduleimpl_conformity: nb ue incoherent (moduleimpl.id={moduleimpl.id})"
+        )
+        return False
     module_evals_poids = evals_poids.transpose().sum(axis=1).to_numpy() != 0
     check = all(
         (modules_coefficients[moduleimpl.module.id].to_numpy() != 0)