diff --git a/src/cryptonote_core/cryptonote_basic.h b/src/cryptonote_core/cryptonote_basic.h
index 860e46b..57dedc5 100644
--- a/src/cryptonote_core/cryptonote_basic.h
+++ b/src/cryptonote_core/cryptonote_basic.h
@@ -389,7 +389,7 @@ namespace cryptonote
   {
     bytecoin_block parent_block;
 
-    transaction miner_tx;
+    transaction miner_tx(blob_type);
     std::vector<crypto::hash> tx_hashes;
 
     BEGIN_SERIALIZE_OBJECT()