Base64-encode that empty string in extra_data.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/v1.erl b/src/v1.erl
index 206ca8a..6ab9e75 100644
--- a/src/v1.erl
+++ b/src/v1.erl
@@ -87,7 +87,7 @@ encode_entries(Entries) ->
     binary_to_list(jiffy:encode({[{entries, encode_entries2(Entries)}]})).
 encode_entries2([H|T]) ->
     LeafInput = base64:encode(plop:serialise(H)),
-    ExtraData = "",
+    ExtraData = base64:encode(""),
     [{[{leaf_input, LeafInput}, {extra_data, ExtraData}]} | encode_entries2(T)];
 encode_entries2([]) ->
     [].