1 files changed, 3 insertions, 0 deletions
diff --git a/src/node/transaction.cpp b/src/node/transaction.cpp
index 0227618edf..4de0b302e6 100644
--- a/src/node/transaction.cpp
+++ b/src/node/transaction.cpp
@@ -121,6 +121,9 @@ CTransactionRef GetTransaction(const CBlockIndex* const block_index, const CTxMe
         uint256 block_hash;
         if (g_txindex->FindTx(hash, block_hash, tx)) {
             if (!block_index || block_index->GetBlockHash() == block_hash) {
+                // Don't return the transaction if the provided block hash doesn't match.
+                // The case where a transaction appears in multiple blocks (e.g. reorgs or
+                // BIP30) is handled by the block lookup below.
                 hashBlock = block_hash;
                 return tx;
             }