diff --git a/src/blockencodings.h b/src/blockencodings.h
--- a/src/blockencodings.h
+++ b/src/blockencodings.h
@@ -80,7 +80,7 @@
 class BlockTransactions {
 public:
     // A BlockTransactions message
-    uint256 blockhash;
+    BlockHash blockhash;
     std::vector<CTransactionRef> txn;
 
     BlockTransactions() {}