diff --git a/apps/activity/models.py b/apps/activity/models.py
index 52f4e0b6..4dbc5522 100644
--- a/apps/activity/models.py
+++ b/apps/activity/models.py
@@ -99,9 +99,10 @@ class Guest(models.Model):
         null=True,
     )
     entry_transaction = models.ForeignKey(
-        null=True,
         'note.Transaction',
         on_delete=models.PROTECT,
+        blank=True,
+        null=True,
     )
 
     class Meta: