diff --git a/sco_recapcomplet.py b/sco_recapcomplet.py
index 9c59a0cc..3a86ccd7 100644
--- a/sco_recapcomplet.py
+++ b/sco_recapcomplet.py
@@ -716,7 +716,7 @@ def make_formsemestre_recapcomplet(
             H.append("</table>")
         return "\n".join(H), "", "html"
     elif format == "csv":
-        CSV = CSV_LINESEP.join([CSV_FIELDSEP.join(x) for x in F])
+        CSV = CSV_LINESEP.join([CSV_FIELDSEP.join(str(x)) for x in F])
         semname = sem["titre_num"].replace(" ", "_")
         date = time.strftime("%d-%m-%Y")
         filename = "notes_modules-%s-%s.csv" % (semname, date)