gistfile1.txt

diff --git a/merkledag/coding.go b/merkledag/coding.go
index 6e108c2..1a29a35 100644
--- a/merkledag/coding.go
+++ b/merkledag/coding.go
@@ -70,7 +70,9 @@ func (n *Node) getPBNode() *pb.PBNode {
                pbn.Links[i].Hash = []byte(l.Hash)
        }
 
-       pbn.Data = n.Data
+       if len(n.Data) > 0 {
+               pbn.Data = n.Data
+       }
        return pbn
 }