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-rw-r--r--src/wallet/ringdb.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/wallet/ringdb.cpp b/src/wallet/ringdb.cpp
index 8da95de7b..b7efdd75c 100644
--- a/src/wallet/ringdb.cpp
+++ b/src/wallet/ringdb.cpp
@@ -424,7 +424,7 @@ bool ringdb::blackball_worker(const std::vector<std::pair<uint64_t, uint64_t>> &
{
case BLACKBALL_BLACKBALL:
MDEBUG("Marking output " << output.first << "/" << output.second << " as spent");
- dbr = mdb_cursor_put(cursor, &key, &data, MDB_APPENDDUP);
+ dbr = mdb_cursor_put(cursor, &key, &data, MDB_NODUPDATA);
if (dbr == MDB_KEYEXIST)
dbr = 0;
break;