diff --git a/src/wallet/bdb.cpp b/src/wallet/bdb.cpp
index 3a9d277f652..d45e8679ac3 100644
--- a/src/wallet/bdb.cpp
+++ b/src/wallet/bdb.cpp
@@ -220,17 +220,17 @@ BerkeleyEnvironment::BerkeleyEnvironment() : m_use_shared_memory(false)
     fMockDb = true;
 }
 
-BerkeleyBatch::SafeDbt::SafeDbt()
+SafeDbt::SafeDbt()
 {
     m_dbt.set_flags(DB_DBT_MALLOC);
 }
 
-BerkeleyBatch::SafeDbt::SafeDbt(void* data, size_t size)
+SafeDbt::SafeDbt(void* data, size_t size)
     : m_dbt(data, size)
 {
 }
 
-BerkeleyBatch::SafeDbt::~SafeDbt()
+SafeDbt::~SafeDbt()
 {
     if (m_dbt.get_data() != nullptr) {
         // Clear memory, e.g. in case it was a private key
@@ -244,17 +244,17 @@ BerkeleyBatch::SafeDbt::~SafeDbt()
     }
 }
 
-const void* BerkeleyBatch::SafeDbt::get_data() const
+const void* SafeDbt::get_data() const
 {
     return m_dbt.get_data();
 }
 
-uint32_t BerkeleyBatch::SafeDbt::get_size() const
+uint32_t SafeDbt::get_size() const
 {
     return m_dbt.get_size();
 }
 
-BerkeleyBatch::SafeDbt::operator Dbt*()
+SafeDbt::operator Dbt*()
 {
     return &m_dbt;
 }
diff --git a/src/wallet/bdb.h b/src/wallet/bdb.h
index ddab85521be..35cc823876b 100644
--- a/src/wallet/bdb.h
+++ b/src/wallet/bdb.h
@@ -165,29 +165,29 @@ public:
     std::unique_ptr<DatabaseBatch> MakeBatch(bool flush_on_close = true) override;
 };
 
+/** RAII class that automatically cleanses its data on destruction */
+class SafeDbt final
+{
+    Dbt m_dbt;
+
+public:
+    // construct Dbt with internally-managed data
+    SafeDbt();
+    // construct Dbt with provided data
+    SafeDbt(void* data, size_t size);
+    ~SafeDbt();
+
+    // delegate to Dbt
+    const void* get_data() const;
+    uint32_t get_size() const;
+
+    // conversion operator to access the underlying Dbt
+    operator Dbt*();
+};
+
 /** RAII class that provides access to a Berkeley database */
 class BerkeleyBatch : public DatabaseBatch
 {
-    /** RAII class that automatically cleanses its data on destruction */
-    class SafeDbt final
-    {
-        Dbt m_dbt;
-
-    public:
-        // construct Dbt with internally-managed data
-        SafeDbt();
-        // construct Dbt with provided data
-        SafeDbt(void* data, size_t size);
-        ~SafeDbt();
-
-        // delegate to Dbt
-        const void* get_data() const;
-        uint32_t get_size() const;
-
-        // conversion operator to access the underlying Dbt
-        operator Dbt*();
-    };
-
 private:
     bool ReadKey(CDataStream&& key, CDataStream& value) override;
     bool WriteKey(CDataStream&& key, CDataStream&& value, bool overwrite = true) override;