diff --git a/app/models/etudiants.py b/app/models/etudiants.py
index e52e3cf6..6ef71ff2 100644
--- a/app/models/etudiants.py
+++ b/app/models/etudiants.py
@@ -1141,7 +1141,9 @@ class ItemSuivi(models.ScoDocModel):
         else:
             d["tags"] = [tag.title for tag in self.tags]
         # Ajoute date locale
-        d["item_date_dmy"] = self.item_date.strftime(scu.DATE_FMT)
+        d["item_date_dmy"] = (
+            self.item_date.strftime(scu.DATE_FMT) if self.item_date else ""
+        )
         return d
 
     def set_tags(self, tags: list[str]):
diff --git a/sco_version.py b/sco_version.py
index f8ffec74..be007ee4 100644
--- a/sco_version.py
+++ b/sco_version.py
@@ -1,7 +1,7 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "9.7.19"
+SCOVERSION = "9.7.20"
 
 SCONAME = "ScoDoc"