diff --git a/lib/lightning.py b/lib/lightning.py
index b683c778..a9c4c2bd 100644
--- a/lib/lightning.py
+++ b/lib/lightning.py
@@ -454,7 +454,7 @@ def SignOutputRaw(json):
     req = rpc_pb2.SignOutputRawRequest()
     json_format.Parse(json, req)
 
-    assert len(req.signDesc.pubKey) in [33, 0]
+    #assert len(req.signDesc.pubKey) in [33, 0]
     assert len(req.signDesc.doubleTweak) in [32, 0]
     assert len(req.signDesc.sigHashes.hashPrevOuts) == 64
     assert len(req.signDesc.sigHashes.hashSequence) == 64