diff --git a/src/init.cpp b/src/init.cpp
index 4caf574c..e76f176e 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1036,7 +1036,7 @@ bool AppInit2()
     std::string strDataDir = GetDataDir().string();
 #ifdef ENABLE_WALLET
     // Wallet file must be a plain filename without a directory
-    if (strWalletFile != boost::filesystem::basename(strWalletFile) + boost::filesystem::extension(strWalletFile))
+    if (strWalletFile != boost::filesystem::path(strWalletFile).filename().string())
         return InitError(strprintf(_("Wallet %s resides outside data directory %s"), strWalletFile, strDataDir));
 #endif
     // Make sure only a single Agrarian process is using the data directory.
diff --git a/src/rpc/protocol.cpp b/src/rpc/protocol.cpp
index 6d6dbf41..754af1e3 100644
--- a/src/rpc/protocol.cpp
+++ b/src/rpc/protocol.cpp
@@ -74,7 +74,7 @@ static const std::string COOKIEAUTH_FILE = ".cookie";
 boost::filesystem::path GetAuthCookieFile()
 {
     boost::filesystem::path path(GetArg("-rpccookiefile", COOKIEAUTH_FILE));
-    if (!path.is_complete()) path = GetDataDir() / path;
+    if (!path.is_absolute()) path = GetDataDir() / path;
     return path;
 }
 
diff --git a/src/util.cpp b/src/util.cpp
index 2976e3dc..d5391dba 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -478,7 +478,7 @@ void ClearDatadirCache()
 boost::filesystem::path GetConfigFile()
 {
     boost::filesystem::path pathConfigFile(GetArg("-conf", "agrarian.conf"));
-    if (!pathConfigFile.is_complete())
+    if (!pathConfigFile.is_absolute())
         pathConfigFile = GetDataDir(false) / pathConfigFile;
 
     return pathConfigFile;
@@ -487,7 +487,7 @@ boost::filesystem::path GetConfigFile()
 boost::filesystem::path GetMasternodeConfigFile()
 {
     boost::filesystem::path pathConfigFile(GetArg("-mnconf", "masternode.conf"));
-    if (!pathConfigFile.is_complete()) pathConfigFile = GetDataDir() / pathConfigFile;
+    if (!pathConfigFile.is_absolute()) pathConfigFile = GetDataDir() / pathConfigFile;
     return pathConfigFile;
 }
 
@@ -523,7 +523,7 @@ void ReadConfigFile(map<string, string>& mapSettingsRet,
 boost::filesystem::path GetPidFile()
 {
     boost::filesystem::path pathPidFile(GetArg("-pid", "agrariand.pid"));
-    if (!pathPidFile.is_complete()) pathPidFile = GetDataDir() / pathPidFile;
+    if (!pathPidFile.is_absolute()) pathPidFile = GetDataDir() / pathPidFile;
     return pathPidFile;
 }
 
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index fccf8821..0ae1e4f3 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -1077,7 +1077,7 @@ bool AttemptBackupWallet(const CWallet& wallet, const filesystem::path& pathSrc,
             return false;
         }
 #if BOOST_VERSION >= 105800 /* BOOST_LIB_VERSION 1_58 */
-        filesystem::copy_file(pathSrc.c_str(), pathDest, filesystem::copy_option::overwrite_if_exists);
+        filesystem::copy_file(pathSrc.c_str(), pathDest, filesystem::copy_options::overwrite_existing);
 #else
         std::ifstream src(pathSrc.c_str(),  std::ios::binary | std::ios::in);
         std::ofstream dst(pathDest.c_str(), std::ios::binary | std::ios::out | std::ios::trunc);