doc fixups for 33106

diff --git a/doc/release-notes-33106.md b/doc/release-notes-33106.md
index 95750ced..f57ae6e4 100644
--- a/doc/release-notes-33106.md
+++ b/doc/release-notes-33106.md
@@ -9,8 +9,7 @@ changed to 100 satoshis per kvB. They can still be changed using their respectiv
 recommended to change both together if you decide to do so.
 
 Other minimum feerates (e.g. the dust feerate, the minimum returned by the fee estimator, and all feerates used by the
-wallet) remain unchanged. The mempool minimum feerate still changes in response to high volume but more gradually, as a
-result of the change to the incremental relay feerate.
+wallet) remain unchanged. The mempool minimum feerate still changes in response to high volume.
 
 Note that unless these lower defaults are widely adopted across the network, transactions created with lower fee rates
 are not guaranteed to propagate or confirm. The wallet feerates remain unchanged; `-mintxfee` must be changed before
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
index 156f6e5b..652ec25f 100644
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -218,7 +218,8 @@ void MinerTestingSetup::TestPackageSelection(const CScript& scriptPubKey, const
     tx.vout[0].nValue = 5000000000LL - 100000000;
     tx.vout[1].nValue = 100000000; // 1BTC output
     // Increase size to avoid rounding errors: when the feerate is extremely small (i.e. 1sat/kvB), evaluating the fee
-    // at a smaller transaction size gives us a rounded value of 0.
+    // at smaller sizes gives us rounded values that are equal to each other, which means we incorrectly include
+    // hashFreeTx2 + hashLowFeeTx2.
     BulkTransaction(tx, 4000);
     Txid hashFreeTx2 = tx.GetHash();
     AddToMempool(tx_mempool, entry.Fee(0).SpendsCoinbase(true).FromTx(tx));
diff --git a/test/functional/feature_rbf.py b/test/functional/feature_rbf.py
index 6922b5e0..443910c0 100755
--- a/test/functional/feature_rbf.py
+++ b/test/functional/feature_rbf.py
@@ -583,7 +583,7 @@ class ReplaceByFeeTest(BitcoinTestFramework):
         tx = self.wallet.send_self_transfer(from_node=self.nodes[0])['tx']
 
         # Higher fee, higher feerate, different txid, but the replacement does not provide a relay
-        # fee conforming to node's `incrementalrelayfee` policy of 1000 sat per KB.
+        # fee conforming to node's `incrementalrelayfee` policy of 100 sat per KB.
         assert_equal(self.nodes[0].getmempoolinfo()["incrementalrelayfee"], Decimal("0.000001"))
         tx.vout[0].nValue -= 1
         assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx.serialize().hex())