diff --git a/src/stratifier.c b/src/stratifier.c
index ae8b16e2..7e93ac21 100644
--- a/src/stratifier.c
+++ b/src/stratifier.c
@@ -1615,6 +1615,7 @@ static bool rebuild_txns(ckpool_t *ckp, sdata_t *sdata, workbase_t *wb)
 			txn->refcount = REFCOUNT_REMOTE;
 			HASH_ADD_STR(sdata->txns, hash, txn);
 		} else {
+			free(data);
 			txn->refcount = REFCOUNT_REMOTE;
 			txn->seen = true;
 			JSON_CPACK(txn_val, "{ss,ss}",