diff --git a/include/rocksdb/utilities/transaction_db.h b/include/rocksdb/utilities/transaction_db.h
index 548518f60..a61234adc 100644
--- a/include/rocksdb/utilities/transaction_db.h
+++ b/include/rocksdb/utilities/transaction_db.h
@@ -77,7 +77,7 @@ struct TransactionDBOptions {
   // write only the committed data (WRITE_COMMITTED). The data could be written
   // before the commit phase. The DB then needs to provide the mechanisms to
   // tell apart committed from uncommitted data.
-  TxnDBWritePolicy write_policy;
+  TxnDBWritePolicy write_policy = TxnDBWritePolicy::WRITE_COMMITTED;
 };
 
 struct TransactionOptions {