diff --git a/app/scodoc/sco_apogee_compare.py b/app/scodoc/sco_apogee_compare.py
index 86e2f334be..b6cb042b2f 100644
--- a/app/scodoc/sco_apogee_compare.py
+++ b/app/scodoc/sco_apogee_compare.py
@@ -272,9 +272,15 @@ def _build_etud_res(e, apo_data):
     r = {}
     for elt_code in apo_data.apo_elts:
         elt = apo_data.apo_elts[elt_code]
-        col_ids_type = [
-            (ec["apoL_a01_code"], ec["Type R\xc3\xa9s."]) for ec in elt.cols
-        ]  # les colonnes de cet élément
+        try:
+            # les colonnes de cet élément
+            col_ids_type = [
+                (ec["apoL_a01_code"], ec["Type R\xc3\xa9s."]) for ec in elt.cols
+            ]
+        except KeyError as exc:
+            raise ScoValueError(
+                "Erreur: un élément sans 'Type R\xc3\xa9s.'. Vérifiez l'encodage de vos fichiers."
+            ) from exc
         r[elt_code] = {}
         for (col_id, type_res) in col_ids_type:
             r[elt_code][type_res] = e.cols[col_id]
diff --git a/sco_version.py b/sco_version.py
index 24931a73be..06ddcfb8ee 100644
--- a/sco_version.py
+++ b/sco_version.py
@@ -1,7 +1,7 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "9.2.7"
+SCOVERSION = "9.2.8"
 
 SCONAME = "ScoDoc"