1 files changed, 4 insertions, 5 deletions
diff --git a/src/wallet/db.h b/src/wallet/db.h
index 6f3cfe9557..e6d5a9f293 100644
--- a/src/wallet/db.h
+++ b/src/wallet/db.h
@@ -36,7 +36,7 @@ private:
 
 public:
     mutable CCriticalSection cs_db;
-    DbEnv *dbenv;
+    std::unique_ptr<DbEnv> dbenv;
     std::map<std::string, int> mapFileUseCount;
     std::map<std::string, Db*> mapDb;
 
@@ -156,6 +156,9 @@ public:
     explicit CDB(CWalletDBWrapper& dbw, const char* pszMode = "r+", bool fFlushOnCloseIn=true);
     ~CDB() { Close(); }
 
+    CDB(const CDB&) = delete;
+    CDB& operator=(const CDB&) = delete;
+
     void Flush();
     void Close();
     static bool Recover(const std::string& filename, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue), std::string& out_backup_filename);
@@ -168,10 +171,6 @@ public:
     /* verifies the database file */
     static bool VerifyDatabaseFile(const std::string& walletFile, const fs::path& dataDir, std::string& warningStr, std::string& errorStr, CDBEnv::recoverFunc_type recoverFunc);
 
-private:
-    CDB(const CDB&);
-    void operator=(const CDB&);
-
 public:
     template <typename K, typename T>
     bool Read(const K& key, T& value)