X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/303c3185205c2f39b2cd19b7f0adaf089ed1c8f7..9b4cc3df6a161710e26a08dab9e549292720f407:/tasklib/task.py

diff --git a/tasklib/task.py b/tasklib/task.py
index 040c15b..0b18a14 100644
--- a/tasklib/task.py
+++ b/tasklib/task.py
@@ -471,8 +471,13 @@ class Task(TaskResource):
         """
 
         # We need to remove spaces for TW-1504, use custom separators
-        data = dict((key, self._serialize(key, value))
-                    for key, value in six.iteritems(self._data))
+        data_tuples = ((key, self._serialize(key, value))
+                       for key, value in six.iteritems(self._data))
+
+        # Empty string denotes empty serialized value, we do not want
+        # to pass that to TaskWarrior.
+        data_tuples = filter(lambda t: t[1] is not '', data_tuples)
+        data = dict(data_tuples)
         return json.dumps(data, separators=(',',':'))
 
 class TaskFilter(SerializingObject):