diff --git a/pi/models.py b/pi/models.py
index 0490748..210d8d9 100644
--- a/pi/models.py
+++ b/pi/models.py
@@ -59,6 +59,8 @@ class PiLog(models.Model):
     @property
     def value(self):
         """Return this log entry's estimated value of pi."""
+        if self.total_count == 0:
+            return 0.0
         return 4.0 * int(self.total_count_inside) / int(self.total_count)
 
     @property