diff --git a/src/test/interfaces_tests.cpp b/src/test/interfaces_tests.cpp
--- a/src/test/interfaces_tests.cpp
+++ b/src/test/interfaces_tests.cpp
@@ -17,7 +17,7 @@
 BOOST_FIXTURE_TEST_SUITE(interfaces_tests, TestChain100Setup)
 
 BOOST_AUTO_TEST_CASE(findBlock) {
-    auto chain = interfaces::MakeChain(m_node, Params());
+    auto &chain = m_node.chain;
     const CChain &active = Assert(m_node.chainman)->ActiveChain();
 
     BlockHash hash;
@@ -75,7 +75,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(findFirstBlockWithTimeAndHeight) {
-    auto chain = interfaces::MakeChain(m_node, Params());
+    auto &chain = m_node.chain;
     const CChain &active = Assert(m_node.chainman)->ActiveChain();
     BlockHash hash;
     int height;
@@ -90,7 +90,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(findAncestorByHeight) {
-    auto chain = interfaces::MakeChain(m_node, Params());
+    auto &chain = m_node.chain;
     const CChain &active = Assert(m_node.chainman)->ActiveChain();
     BlockHash hash;
     BOOST_CHECK(chain->findAncestorByHeight(active[20]->GetBlockHash(), 10,
@@ -100,7 +100,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(findAncestorByHash) {
-    auto chain = interfaces::MakeChain(m_node, Params());
+    auto &chain = m_node.chain;
     const CChain &active = Assert(m_node.chainman)->ActiveChain();
     int height = -1;
     BOOST_CHECK(chain->findAncestorByHash(active[20]->GetBlockHash(),
@@ -112,7 +112,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(findCommonAncestor) {
-    auto chain = interfaces::MakeChain(m_node, Params());
+    auto &chain = m_node.chain;
     const CChain &active = Assert(m_node.chainman)->ActiveChain();
     auto *orig_tip = active.Tip();
     for (int i = 0; i < 10; ++i) {
@@ -149,7 +149,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(hasBlocks) {
-    auto chain = interfaces::MakeChain(m_node, Params());
+    auto &chain = m_node.chain;
     const CChain &active = Assert(m_node.chainman)->ActiveChain();
 
     // Test ranges
diff --git a/src/wallet/test/coinselector_tests.cpp b/src/wallet/test/coinselector_tests.cpp
--- a/src/wallet/test/coinselector_tests.cpp
+++ b/src/wallet/test/coinselector_tests.cpp
@@ -325,7 +325,7 @@
     // Make sure that can use BnB when there are preset inputs
     empty_wallet();
     {
-        auto wallet = std::make_unique<CWallet>(m_chain.get(), "",
+        auto wallet = std::make_unique<CWallet>(m_node.chain.get(), "",
                                                 CreateMockWalletDatabase());
         bool firstRun;
         wallet->LoadWallet(firstRun);
diff --git a/src/wallet/test/init_test_fixture.h b/src/wallet/test/init_test_fixture.h
--- a/src/wallet/test/init_test_fixture.h
+++ b/src/wallet/test/init_test_fixture.h
@@ -19,7 +19,6 @@
     fs::path m_datadir;
     fs::path m_cwd;
     std::map<std::string, fs::path> m_walletdir_path_cases;
-    std::unique_ptr<interfaces::Chain> m_chain;
     std::unique_ptr<interfaces::WalletClient> m_wallet_client;
 };
 
diff --git a/src/wallet/test/init_test_fixture.cpp b/src/wallet/test/init_test_fixture.cpp
--- a/src/wallet/test/init_test_fixture.cpp
+++ b/src/wallet/test/init_test_fixture.cpp
@@ -12,8 +12,7 @@
 InitWalletDirTestingSetup::InitWalletDirTestingSetup(
     const std::string &chainName)
     : BasicTestingSetup(chainName) {
-    m_chain = interfaces::MakeChain(m_node, Params());
-    m_wallet_client = MakeWalletClient(*m_chain, *Assert(m_node.args));
+    m_wallet_client = MakeWalletClient(*m_node.chain, *Assert(m_node.args));
 
     std::string sep;
     sep += fs::path::preferred_separator;
diff --git a/src/wallet/test/ismine_tests.cpp b/src/wallet/test/ismine_tests.cpp
--- a/src/wallet/test/ismine_tests.cpp
+++ b/src/wallet/test/ismine_tests.cpp
@@ -28,9 +28,7 @@
     CKey uncompressedKey;
     uncompressedKey.MakeNewKey(false);
     CPubKey uncompressedPubkey = uncompressedKey.GetPubKey();
-    NodeContext node;
-    std::unique_ptr<interfaces::Chain> chain =
-        interfaces::MakeChain(node, Params());
+    std::unique_ptr<interfaces::Chain> &chain = m_node.chain;
 
     CScript scriptPubKey;
     isminetype result;
diff --git a/src/wallet/test/scriptpubkeyman_tests.cpp b/src/wallet/test/scriptpubkeyman_tests.cpp
--- a/src/wallet/test/scriptpubkeyman_tests.cpp
+++ b/src/wallet/test/scriptpubkeyman_tests.cpp
@@ -17,10 +17,7 @@
 // for recognized scripts even when keys may not be available for signing.
 BOOST_AUTO_TEST_CASE(CanProvide) {
     // Set up wallet and keyman variables.
-    NodeContext node;
-    std::unique_ptr<interfaces::Chain> chain =
-        interfaces::MakeChain(node, Params());
-    CWallet wallet(chain.get(), "", CreateDummyWalletDatabase());
+    CWallet wallet(m_node.chain.get(), "", CreateDummyWalletDatabase());
     LegacyScriptPubKeyMan &keyman = *wallet.GetOrCreateLegacyScriptPubKeyMan();
 
     // Make a 1 of 2 multisig script
diff --git a/src/wallet/test/wallet_test_fixture.h b/src/wallet/test/wallet_test_fixture.h
--- a/src/wallet/test/wallet_test_fixture.h
+++ b/src/wallet/test/wallet_test_fixture.h
@@ -23,9 +23,8 @@
         const std::string &chainName = CBaseChainParams::MAIN);
     ~WalletTestingSetup();
 
-    std::unique_ptr<interfaces::Chain> m_chain;
     std::unique_ptr<interfaces::WalletClient> m_wallet_client =
-        interfaces::MakeWalletClient(*m_chain, *Assert(m_node.args));
+        interfaces::MakeWalletClient(*m_node.chain, *Assert(m_node.args));
     CWallet m_wallet;
     std::unique_ptr<interfaces::Handler> m_chain_notifications_handler;
 };
diff --git a/src/wallet/test/wallet_test_fixture.cpp b/src/wallet/test/wallet_test_fixture.cpp
--- a/src/wallet/test/wallet_test_fixture.cpp
+++ b/src/wallet/test/wallet_test_fixture.cpp
@@ -10,12 +10,12 @@
 #include <wallet/rpcdump.h>
 
 WalletTestingSetup::WalletTestingSetup(const std::string &chainName)
-    : TestingSetup(chainName), m_chain(interfaces::MakeChain(m_node, Params())),
-      m_wallet(m_chain.get(), "", CreateMockWalletDatabase()) {
+    : TestingSetup(chainName),
+      m_wallet(m_node.chain.get(), "", CreateMockWalletDatabase()) {
     bool fFirstRun;
     m_wallet.LoadWallet(fFirstRun);
     m_chain_notifications_handler =
-        m_chain->handleNotifications({&m_wallet, [](CWallet *) {}});
+        m_node.chain->handleNotifications({&m_wallet, [](CWallet *) {}});
     m_wallet_client->registerRpcs();
 }
 
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -855,8 +855,7 @@
 }
 
 BOOST_FIXTURE_TEST_CASE(ZapSelectTx, TestChain100Setup) {
-    auto chain = interfaces::MakeChain(m_node, Params());
-    auto wallet = TestLoadWallet(*chain);
+    auto wallet = TestLoadWallet(*m_node.chain);
     CKey key;
     key.MakeNewKey(true);
     AddKey(*wallet, key);