diff --git a/doc/release-notes-litecoin.md b/doc/release-notes-litecoin.md
index 4c2862cb2..34bccfb88 100644
--- a/doc/release-notes-litecoin.md
+++ b/doc/release-notes-litecoin.md
@@ -94,6 +94,11 @@ Minimum relay fee lowered
 
 The minimum relay fee `-minrelayfee` has been lowered to 0.01 lites per kB (0.00001 LTC). This is to prepare for dropping the minimum transaction fee to 0.1 lites per kB (0.0001 LTC) in the next release.
 
+Mempool replacement disabled by default
+---------------------------------------
+
+Mempool replacement `--mempoolreplacement` has been disabled by default.
+
 Miner block size limiting deprecated
 ------------------------------------
 
diff --git a/src/validation.h b/src/validation.h
index 672ef0a37..a02e1a8a4 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -134,7 +134,7 @@ static const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100;
 /** Default for -persistmempool */
 static const bool DEFAULT_PERSIST_MEMPOOL = true;
 /** Default for -mempoolreplacement */
-static const bool DEFAULT_ENABLE_REPLACEMENT = true;
+static const bool DEFAULT_ENABLE_REPLACEMENT = false;
 /** Default for using fee filter */
 static const bool DEFAULT_FEEFILTER = true;
 
diff --git a/test/functional/bumpfee.py b/test/functional/bumpfee.py
index f3ac67f94..5d4cc2f84 100755
--- a/test/functional/bumpfee.py
+++ b/test/functional/bumpfee.py
@@ -15,7 +15,7 @@ make assumptions about execution order.
 """
 
 from segwit import send_to_witness
-from test_framework.test_framework import BitcoinTestFramework
+from test_framework.test_framework import BitcoinTestFramework, SkipTest
 from test_framework import blocktools
 from test_framework.mininode import CTransaction
 from test_framework.util import *
@@ -37,6 +37,8 @@ class BumpFeeTest(BitcoinTestFramework):
                            for i in range(self.num_nodes)]
 
     def run_test(self):
+        raise SkipTest("Litecoin doesn't support RBF.")
+
         # Encrypt wallet for test_locked_wallet_fails test
         self.nodes[1].node_encrypt_wallet(WALLET_PASSPHRASE)
         self.start_node(1)
diff --git a/test/functional/listtransactions.py b/test/functional/listtransactions.py
index e4522cc3b..0dd838e68 100755
--- a/test/functional/listtransactions.py
+++ b/test/functional/listtransactions.py
@@ -90,8 +90,8 @@ class ListTransactionsTest(BitcoinTestFramework):
         assert_array_result(self.nodes[0].listtransactions("watchonly", 100, 0, True),
                            {"category":"receive","amount":Decimal("0.1")},
                            {"txid":txid, "account" : "watchonly"} )
-
-        self.run_rbf_opt_in_test()
+    # Litecoin has RBF disabled
+    #    self.run_rbf_opt_in_test()
 
     # Check that the opt-in-rbf flag works properly, for sent and received
     # transactions.