diff --git a/src/addrdb.h b/src/addrdb.h
--- a/src/addrdb.h
+++ b/src/addrdb.h
@@ -85,11 +85,11 @@
 /** Access to the banlist database (banlist.dat) */
 class CBanDB {
 private:
-    fs::path pathBanlist;
+    const fs::path m_ban_list_path;
     const CChainParams &chainParams;
 
 public:
-    CBanDB(const CChainParams &chainParams);
+    CBanDB(fs::path ban_list_path, const CChainParams &_chainParams);
     bool Write(const banmap_t &banSet);
     bool Read(banmap_t &banSet);
 };
diff --git a/src/addrdb.cpp b/src/addrdb.cpp
--- a/src/addrdb.cpp
+++ b/src/addrdb.cpp
@@ -113,16 +113,15 @@
 
 } // namespace
 
-CBanDB::CBanDB(const CChainParams &chainParamsIn) : chainParams(chainParamsIn) {
-    pathBanlist = GetDataDir() / "banlist.dat";
-}
+CBanDB::CBanDB(fs::path ban_list_path, const CChainParams &_chainParams)
+    : m_ban_list_path(std::move(ban_list_path)), chainParams(_chainParams) {}
 
 bool CBanDB::Write(const banmap_t &banSet) {
-    return SerializeFileDB(chainParams, "banlist", pathBanlist, banSet);
+    return SerializeFileDB(chainParams, "banlist", m_ban_list_path, banSet);
 }
 
 bool CBanDB::Read(banmap_t &banSet) {
-    return DeserializeFileDB(chainParams, pathBanlist, banSet);
+    return DeserializeFileDB(chainParams, m_ban_list_path, banSet);
 }
 
 CAddrDB::CAddrDB(const CChainParams &chainParamsIn)
diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1944,7 +1944,8 @@
     // need to reindex later.
 
     assert(!g_banman);
-    g_banman = std::make_unique<BanMan>(config.GetChainParams(), &uiInterface);
+    g_banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat",
+                                        config.GetChainParams(), &uiInterface);
     assert(!g_connman);
     g_connman = std::make_unique<CConnman>(
         config, GetRand(std::numeric_limits<uint64_t>::max()),
diff --git a/src/net.h b/src/net.h
--- a/src/net.h
+++ b/src/net.h
@@ -135,7 +135,8 @@
     // between nodes running old code and nodes running
     // new code.
     ~BanMan();
-    BanMan(const CChainParams &_params, CClientUIInterface *client_interface);
+    BanMan(fs::path ban_file, const CChainParams &chainParams,
+           CClientUIInterface *client_interface);
     void Ban(const CNetAddr &netAddr, const BanReason &reason,
              int64_t bantimeoffset = 0, bool sinceUnixEpoch = false);
     void Ban(const CSubNet &subNet, const BanReason &reason,
@@ -161,8 +162,7 @@
     CCriticalSection cs_setBanned;
     bool setBannedIsDirty;
     CClientUIInterface *clientInterface = nullptr;
-
-    const CChainParams &params;
+    CBanDB m_ban_db;
 };
 
 class NetEventsInterface;
diff --git a/src/net.cpp b/src/net.cpp
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -481,10 +481,10 @@
     }
 
     int64_t nStart = GetTimeMillis();
-    CBanDB bandb(params);
+
     banmap_t banmap;
     GetBanned(banmap);
-    if (bandb.Write(banmap)) {
+    if (m_ban_db.Write(banmap)) {
         SetBannedSetDirty(false);
     }
 
@@ -2518,9 +2518,10 @@
     return true;
 }
 
-BanMan::BanMan(const CChainParams &_params,
+BanMan::BanMan(fs::path ban_file, const CChainParams &chainParams,
                CClientUIInterface *client_interface)
-    : clientInterface(client_interface), params(_params) {
+    : clientInterface(client_interface),
+      m_ban_db(std::move(ban_file), chainParams) {
     if (clientInterface) {
         clientInterface->InitMessage(_("Loading banlist..."));
     }
@@ -2528,9 +2529,8 @@
     // Load addresses from banlist.dat
     int64_t nStart = GetTimeMillis();
     setBannedIsDirty = false;
-    CBanDB bandb(params);
     banmap_t banmap;
-    if (bandb.Read(banmap)) {
+    if (m_ban_db.Read(banmap)) {
         // thread save setter
         SetBanned(banmap);
         // no need to write down, just read data
diff --git a/src/test/denialofservice_tests.cpp b/src/test/denialofservice_tests.cpp
--- a/src/test/denialofservice_tests.cpp
+++ b/src/test/denialofservice_tests.cpp
@@ -229,7 +229,8 @@
     const Config &config = GetConfig();
     std::atomic<bool> interruptDummy(false);
 
-    auto banman = std::make_unique<BanMan>(config.GetChainParams(), nullptr);
+    auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat",
+                                           config.GetChainParams(), nullptr);
     auto connman = std::make_unique<CConnman>(config, 0x1337, 0x1337);
     auto peerLogic = std::make_unique<PeerLogicValidation>(
         connman.get(), banman.get(), scheduler, false);
@@ -293,7 +294,8 @@
     const Config &config = GetConfig();
     std::atomic<bool> interruptDummy(false);
 
-    auto banman = std::make_unique<BanMan>(config.GetChainParams(), nullptr);
+    auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat",
+                                           config.GetChainParams(), nullptr);
     auto connman = std::make_unique<CConnman>(config, 0x1337, 0x1337);
     auto peerLogic = std::make_unique<PeerLogicValidation>(
         connman.get(), banman.get(), scheduler, false);
@@ -345,7 +347,8 @@
     const Config &config = GetConfig();
     std::atomic<bool> interruptDummy(false);
 
-    auto banman = std::make_unique<BanMan>(config.GetChainParams(), nullptr);
+    auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat",
+                                           config.GetChainParams(), nullptr);
     auto connman = std::make_unique<CConnman>(config, 0x1337, 0x1337);
     auto peerLogic = std::make_unique<PeerLogicValidation>(
         connman.get(), banman.get(), scheduler, false);
diff --git a/src/test/test_bitcoin.cpp b/src/test/test_bitcoin.cpp
--- a/src/test/test_bitcoin.cpp
+++ b/src/test/test_bitcoin.cpp
@@ -117,7 +117,8 @@
         threadGroup.create_thread(&ThreadScriptCheck);
     }
 
-    g_banman = std::make_unique<BanMan>(chainparams, nullptr);
+    g_banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat",
+                                        chainparams, nullptr);
     // Deterministic randomness for tests.
     g_connman = std::make_unique<CConnman>(config, 0x1337, 0x1337);
 }