diff --git a/src/mia_core/models.py b/src/mia_core/models.py
index be6fb34..5a7ae93 100644
--- a/src/mia_core/models.py
+++ b/src/mia_core/models.py
@@ -69,7 +69,7 @@ class StampedModel(models.Model):
                 F"Missing current_user in {self.__class__.__name__}")
         try:
             self.created_by
-        except ObjectDoesNotExist as e:
+        except ObjectDoesNotExist:
             self.created_by = self.current_user
         self.updated_by = self.current_user
         super().save(force_insert=force_insert, force_update=force_update,