diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1159,7 +1159,7 @@
             // Iterate over all its outputs, and mark transactions in the wallet
             // that spend them abandoned too.
             TxSpends::const_iterator iter =
-                mapTxSpends.lower_bound(COutPoint(txid, 0));
+                mapTxSpends.lower_bound(COutPoint(now, 0));
             while (iter != mapTxSpends.end() && iter->first.GetTxId() == now) {
                 if (!done.count(iter->second)) {
                     todo.insert(iter->second);
diff --git a/test/functional/abandonconflict.py b/test/functional/abandonconflict.py
--- a/test/functional/abandonconflict.py
+++ b/test/functional/abandonconflict.py
@@ -87,9 +87,18 @@
             self.nodes[0].createrawtransaction(inputs, outputs))
         txABC2 = self.nodes[0].sendrawtransaction(signed2["hex"])
 
+        # Create a child tx spending ABC2
+        signed3_change = Decimal("24.999")
+        inputs = [{"txid": txABC2, "vout": 0}]
+        outputs = {self.nodes[0].getnewaddress(): signed3_change}
+        signed3 = self.nodes[0].signrawtransaction(
+            self.nodes[0].createrawtransaction(inputs, outputs))
+        # note tx is never directly referenced, only abandoned as a child of the above
+        self.nodes[0].sendrawtransaction(signed3["hex"])
+
         # In mempool txs from self should increase balance from change
         newbalance = self.nodes[0].getbalance()
-        assert_equal(newbalance, balance - Decimal("30") + Decimal("24.9996"))
+        assert_equal(newbalance, balance - Decimal("30") + signed3_change)
         balance = newbalance
 
         # Restart the node with a higher min relay fee so the parent tx is no longer in mempool
@@ -104,7 +113,7 @@
         # Transactions which are not in the mempool should only reduce wallet balance.
         # Transaction inputs should still be spent, but the change not yet received.
         newbalance = self.nodes[0].getbalance()
-        assert_equal(newbalance, balance - Decimal("24.9996"))
+        assert_equal(newbalance, balance - signed3_change)
         # Unconfirmed received funds that are not in mempool also shouldn't show
         # up in unconfirmed balance.  Note that the transactions stored in the wallet
         # are not necessarily in the node's mempool.