diff --git a/nummi/main/models.py b/nummi/main/models.py
index 82d972b..f3bb598 100644
--- a/nummi/main/models.py
+++ b/nummi/main/models.py
@@ -152,7 +152,6 @@ class Snapshot(AccountModel):
                 trans.save()
 
         self.diff = self.value - self.start_value
-        self.sum = self.transaction_set.aggregate(sum=models.Sum("value")).get("sum", 0)
         super().save(*args, **kwargs)
 
     def update_sum(self):