diff --git a/app/scodoc/gen_tables.py b/app/scodoc/gen_tables.py
index a9ed10aaf..2ac3c3981 100644
--- a/app/scodoc/gen_tables.py
+++ b/app/scodoc/gen_tables.py
@@ -58,6 +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_pdf import SU
 from app import log
 
@@ -539,17 +540,18 @@ class GenTable(object):
         #
         # titles = ["<para><b>%s</b></para>" % x for x in self.get_titles_list()]
         pdf_style_list = []
-        Pt = [
-            [Paragraph(SU(str(x)), CellStyle) for x in line]
-            for line in (
-                self.get_data_list(
-                    pdf_mode=True,
-                    pdf_style_list=pdf_style_list,
-                    with_titles=True,
-                    omit_hidden_lines=True,
-                )
-            )
-        ]
+        data_list = self.get_data_list(
+            pdf_mode=True,
+            pdf_style_list=pdf_style_list,
+            with_titles=True,
+            omit_hidden_lines=True,
+        )
+        try:
+            Pt = [
+                [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
         pdf_style_list += self.pdf_table_style
         T = Table(Pt, repeatRows=1, colWidths=self.pdf_col_widths, style=pdf_style_list)