diff --git a/tests/core_tests/wallet_tests.cpp b/tests/core_tests/wallet_tests.cpp
index 74c9f24e..3bee8148 100644
--- a/tests/core_tests/wallet_tests.cpp
+++ b/tests/core_tests/wallet_tests.cpp
@@ -22,18 +22,6 @@ const std::string g_wallet_password = "dofatibmzibeziyekigo";
 const currency::account_base null_account = AUTO_VAL_INIT(null_account);
 
 
-struct wlt_lambda_on_transfer2_wrapper : public tools::i_wallet2_callback
-{
-  typedef std::function<bool(const tools::wallet_public::wallet_transfer_info&, uint64_t, uint64_t, uint64_t)> Func;
-  wlt_lambda_on_transfer2_wrapper(Func callback) : m_result(false), m_callback(callback) {}
-  virtual void on_transfer2(const tools::wallet_public::wallet_transfer_info& wti, uint64_t balance, uint64_t unlocked_balance, uint64_t total_mined) override
-  {
-    m_result = m_callback(wti, balance, unlocked_balance, total_mined);
-  }
-  bool m_result;
-  Func m_callback;
-};
-
 POD_MAKE_COMPARABLE(currency, tx_out);
 
 // Determines which output is real and actually spent in tx inputs, when there are fake outputs.
diff --git a/tests/core_tests/wallet_tests_basic.cpp b/tests/core_tests/wallet_tests_basic.cpp
index 5c2744e2..fe4ec260 100644
--- a/tests/core_tests/wallet_tests_basic.cpp
+++ b/tests/core_tests/wallet_tests_basic.cpp
@@ -72,6 +72,7 @@ bool wallet_test::check_balance(currency::core& c, size_t ev_index, const std::v
 
   return true;
 }
+
 std::shared_ptr<tools::wallet2> wallet_test::init_playtime_test_wallet(const std::vector<test_event_entry>& events, currency::core& c, const account_base& acc) const
 {
   CHECK_AND_ASSERT_THROW_MES(events.size() > 0 && events[0].type() == typeid(currency::block), "Invalid events queue, can't find genesis block at the beginning");
@@ -84,6 +85,7 @@ std::shared_ptr<tools::wallet2> wallet_test::init_playtime_test_wallet(const std
   w->set_core_proxy(m_core_proxy);
   return w;
 }
+
 std::shared_ptr<tools::wallet2> wallet_test::init_playtime_test_wallet(const std::vector<test_event_entry>& events, currency::core& c, size_t account_index) const
 {
   CHECK_AND_ASSERT_THROW_MES(account_index < m_accounts.size(), "Invalid account index");
diff --git a/tests/core_tests/wallet_tests_basic.h b/tests/core_tests/wallet_tests_basic.h
index 4627284c..1e921b29 100644
--- a/tests/core_tests/wallet_tests_basic.h
+++ b/tests/core_tests/wallet_tests_basic.h
@@ -87,3 +87,15 @@ struct wallet_callback_balance_checker : public tools::i_wallet2_callback
   uint64_t m_unlocked_balance;
   uint64_t m_total_mined;
 };
+
+struct wlt_lambda_on_transfer2_wrapper : public tools::i_wallet2_callback
+{
+  typedef std::function<bool(const tools::wallet_public::wallet_transfer_info&, uint64_t, uint64_t, uint64_t)> Func;
+  wlt_lambda_on_transfer2_wrapper(Func callback) : m_result(false), m_callback(callback) {}
+  virtual void on_transfer2(const tools::wallet_public::wallet_transfer_info& wti, uint64_t balance, uint64_t unlocked_balance, uint64_t total_mined) override
+  {
+    m_result = m_callback(wti, balance, unlocked_balance, total_mined);
+  }
+  bool m_result;
+  Func m_callback;
+};