diff --git a/app/scodoc/gen_tables.py b/app/scodoc/gen_tables.py
index 2ac3c3981..855545556 100644
--- a/app/scodoc/gen_tables.py
+++ b/app/scodoc/gen_tables.py
@@ -58,7 +58,7 @@ from app.scodoc import sco_utils as scu
 from app.scodoc import sco_excel
 from app.scodoc import sco_pdf
 from app.scodoc import sco_xml
-from app.scodoc.sco_exceptions import ScoValueError
+from app.scodoc.sco_exceptions import ScoPDFFormatError
 from app.scodoc.sco_pdf import SU
 from app import log
 
@@ -551,7 +551,7 @@ class GenTable(object):
                 [Paragraph(SU(str(x)), CellStyle) for x in line] for line in data_list
             ]
         except ValueError as exc:
-            raise ScoValueError(f"Erreur dans un format pdf: <br/>{str(exc)}") from exc
+            raise ScoPDFFormatError(str(exc)) from exc
         pdf_style_list += self.pdf_table_style
         T = Table(Pt, repeatRows=1, colWidths=self.pdf_col_widths, style=pdf_style_list)
 
diff --git a/app/scodoc/sco_exceptions.py b/app/scodoc/sco_exceptions.py
index c563c93e6..d975766ef 100644
--- a/app/scodoc/sco_exceptions.py
+++ b/app/scodoc/sco_exceptions.py
@@ -60,6 +60,21 @@ class ScoFormatError(ScoValueError):
     pass
 
 
+class ScoPDFFormatError(ScoValueError):
+    "erreur génération PDF (templates platypus, ...)"
+
+    def __init__(self, msg, dest_url=None):
+        super().__init__(
+            f"""Erreur dans un format pdf:
+            <p>{msg}</p>
+            <p>Vérifiez les paramètres (polices de caractères, balisage) 
+            dans les paramètres ou préférences.
+            </p>
+            """,
+            dest_url=dest_url,
+        )
+
+
 class ScoInvalidDept(ScoValueError):
     """departement invalide"""
 
diff --git a/app/scodoc/sco_groups_view.py b/app/scodoc/sco_groups_view.py
index 603627d14..df4c55e98 100644
--- a/app/scodoc/sco_groups_view.py
+++ b/app/scodoc/sco_groups_view.py
@@ -815,7 +815,7 @@ def tab_absences_html(groups_infos, etat=None):
             % (groups_infos.base_url, groups_infos.groups_titles),
             """<li><a class="stdlink" href="trombino?%s&format=pdf">Trombinoscope en PDF</a></li>"""
             % groups_infos.groups_query_args,
-            """<li><a class="stdlink" href="pdf_trombino_tours?%s&format=pdf">Trombinoscope en PDF (format "IUT de Tours", beta)</a></li>"""
+            """<li><a class="stdlink" href="pdf_trombino_tours?%s&format=pdf">Trombinoscope en PDF (format "IUT de Tours")</a></li>"""
             % groups_infos.groups_query_args,
             """<li><a class="stdlink" href="pdf_feuille_releve_absences?%s&format=pdf">Feuille relevé absences hebdomadaire (beta)</a></li>"""
             % groups_infos.groups_query_args,
diff --git a/app/scodoc/sco_preferences.py b/app/scodoc/sco_preferences.py
index da3e1a4ef..b38fb736f 100644
--- a/app/scodoc/sco_preferences.py
+++ b/app/scodoc/sco_preferences.py
@@ -762,7 +762,7 @@ class BasePreferences(object):
                 {
                     "initvalue": "Helvetica",
                     "title": "Police de caractère principale",
-                    "explanation": "pour les pdf",
+                    "explanation": "pour les pdf (Helvetica est recommandée)",
                     "size": 25,
                     "category": "pdf",
                 },
diff --git a/app/scodoc/sco_trombino_tours.py b/app/scodoc/sco_trombino_tours.py
index e7f2266fb..3861bb74f 100644
--- a/app/scodoc/sco_trombino_tours.py
+++ b/app/scodoc/sco_trombino_tours.py
@@ -44,6 +44,7 @@ from app.scodoc import sco_groups_view
 from app.scodoc import sco_preferences
 from app.scodoc import sco_trombino
 from app.scodoc import sco_etud
+from app.scodoc.sco_exceptions import ScoPDFFormatError
 from app.scodoc.sco_pdf import *
 
 
@@ -268,7 +269,10 @@ def pdf_trombino_tours(
             preferences=sco_preferences.SemPreferences(),
         )
     )
-    document.build(objects)
+    try:
+        document.build(objects)
+    except (ValueError, KeyError) as exc:
+        raise ScoPDFFormatError(str(exc)) from exc
     data = report.getvalue()
 
     return scu.sendPDFFile(data, filename)