1 files changed, 1 insertions, 1 deletions

diff --git a/dexcom_reader/database_records.py b/dexcom_reader/database_records.py
index 22ba279..fa09bea 100644
--- a/dexcom_reader/database_records.py
+++ b/dexcom_reader/database_records.py
@@ -324,7 +324,7 @@ class EGVRecord(GenericTimestampedRecord):
 
   @property
   def noise (self):
-    return (ord(self.data[3]) & constants.EGV_NOISE_MASK) >> 4
+    return (ord(self.full_trend) & constants.EGV_NOISE_MASK) >> 4
   def __repr__(self):
     if self.is_special:
       return '%s: %s' % (self.display_time, self.glucose_special_meaning)