diff --git a/tests/test_zfsautobackup.py b/tests/test_zfsautobackup.py
index 8b33839..5c25ae1 100644
--- a/tests/test_zfsautobackup.py
+++ b/tests/test_zfsautobackup.py
@@ -896,7 +896,7 @@ test_target1/test_source2/fs2/sub@test-20101111000003
         n=ZfsNode("test",l)
         d=ZfsDataset(n,"test_source1@test")
 
-        sp=d.send_pipe([], prev_snapshot=None, resume_token=None, show_progress=True, raw=False)
+        sp=d.send_pipe([], prev_snapshot=None, resume_token=None, show_progress=True, raw=False, output_pipes=[])
 
 
         with OutputIO() as buf:
diff --git a/zfs_autobackup/ZfsDataset.py b/zfs_autobackup/ZfsDataset.py
index 5e2525a..de990bd 100644
--- a/zfs_autobackup/ZfsDataset.py
+++ b/zfs_autobackup/ZfsDataset.py
@@ -494,13 +494,14 @@ class ZfsDataset:
 
         return self.from_names(names[1:])
 
-    def send_pipe(self, features, prev_snapshot, resume_token, show_progress, raw):
+    def send_pipe(self, features, prev_snapshot, resume_token, show_progress, raw, output_pipes):
         """returns a pipe with zfs send output for this snapshot
 
         resume_token: resume sending from this token. (in that case we don't
         need to know snapshot names)
 
         Args:
+            :type output_pipes: list of CmdPipe
             :type features: list of str
             :type prev_snapshot: ZfsDataset
             :type resume_token: str