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-rw-r--r--polls/models.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/polls/models.py b/polls/models.py
index 4ca5036..4a7f584 100644
--- a/polls/models.py
+++ b/polls/models.py
@@ -128,7 +128,7 @@ class Choice(models.Model):
def getSum(self):
'''Get the sum of votes for this choice'''
sum = 0
- for vote in Vote.objects.filter(choice=self):
+ for vote in Vote.objects.filter(choice=self, value__isnull=False):
sum += vote.value
return sum