diff --git a/ldclient/client.py b/ldclient/client.py
index 7934bf87..dfbeb649 100644
--- a/ldclient/client.py
+++ b/ldclient/client.py
@@ -235,7 +235,7 @@ def cb(feature):
                 if val is None:
                     val = default
             self._send({'kind': 'feature', 'key': key,
-                        'user': user, 'value': val})
+                        'user': user, 'value': val, 'default': default})
             return val
 
         if self._config.stream and self._store.initialized:
diff --git a/testing/test_ldclient.py b/testing/test_ldclient.py
index ed126cf8..438e63d2 100644
--- a/testing/test_ldclient.py
+++ b/testing/test_ldclient.py
@@ -115,7 +115,7 @@ def test_toggle_event():
     client.toggle('feature.key', user, default=None)
 
     def expected_event(e):
-        return e['kind'] == 'feature' and e['key'] == 'feature.key' and e['user'] == user and e['value'] == True
+        return e['kind'] == 'feature' and e['key'] == 'feature.key' and e['user'] == user and e['value'] == True and e['default'] == None
 
     assert expected_event(client._queue.get(False))