diff --git a/src/currency_core/blockchain_storage.cpp b/src/currency_core/blockchain_storage.cpp
index 7c39c5f9..5e21bd02 100644
--- a/src/currency_core/blockchain_storage.cpp
+++ b/src/currency_core/blockchain_storage.cpp
@@ -1720,6 +1720,34 @@ bool blockchain_storage::handle_alternative_block(const block& b, const crypto::
     alt_block_extended_info abei = AUTO_VAL_INIT(abei);
     abei.bl = b;
     abei.onboard_transactions.swap(bvc.m_onboard_transactions);
+    //for altblocks we should be sure that all transactions kept in onboard_transactions
+    for (auto& h: abei.bl.tx_hashes)
+    {
+      if (abei.onboard_transactions.count(h) == 0)
+      {
+        //need to take if from pool
+        transaction tx = AUTO_VAL_INIT(tx);
+        bool r = m_tx_pool.get_transaction(h, tx);
+        if (!r)
+        {
+          //transaction could be in main chain 
+          auto tx_ptr = m_db_transactions.find(h);
+          if (!tx_ptr)
+          {
+            LOG_ERROR("Transaction " << h  << " for altblock " << get_block_hash(abei.bl) << " not found");
+          }
+          else
+          {
+            abei.onboard_transactions[h] = tx_ptr->tx;
+          }
+        }
+        else
+        {
+          abei.onboard_transactions[h] = tx;
+        }
+      }
+    }
+
     abei.timestamp = m_core_runtime_config.get_core_time();
     abei.height = alt_chain.size() ? it_prev->second.height + 1 : *ptr_main_prev + 1;
     CHECK_AND_ASSERT_MES_CUSTOM(coinbase_height == abei.height, false, bvc.m_verification_failed = true, "block coinbase height doesn't match with altchain height, declined");
diff --git a/tests/core_tests/chain_switch_1.cpp b/tests/core_tests/chain_switch_1.cpp
index 0bb66a66..cc53a658 100644
--- a/tests/core_tests/chain_switch_1.cpp
+++ b/tests/core_tests/chain_switch_1.cpp
@@ -685,11 +685,19 @@ bool chain_switching_when_out_spent_in_alt_chain_mixin::generate(std::vector<tes
 
 bool chain_switching_when_out_spent_in_alt_chain_ref_id::generate(std::vector<test_event_entry>& events) const
 {
+  random_state_test_restorer::reset_random(0); // to make the test deterministic
+  uint64_t ts = 1450000000;
+  test_core_time::adjust(ts);
+
   // Test idea: make sure tx can spend (using ref_by_id) an output from another tx when both txs are in an altchain.
   bool r = false;
-  GENERATE_ACCOUNT(miner_acc);
+  GENERATE_ACCOUNT(miner_acc);  
   GENERATE_ACCOUNT(alice_acc);
   GENERATE_ACCOUNT(bob_acc);
+  miner_acc.set_createtime(ts);
+  alice_acc.set_createtime(ts);
+  bob_acc.set_createtime(ts);
+
   MAKE_GENESIS_BLOCK(events, blk_0, miner_acc, test_core_time::get_time());
   MAKE_NEXT_BLOCK(events, blk_1, blk_0, miner_acc);
   REWIND_BLOCKS_N(events, blk_1r, blk_1, miner_acc, CURRENCY_MINED_MONEY_UNLOCK_WINDOW);
diff --git a/tests/core_tests/chaingen.cpp b/tests/core_tests/chaingen.cpp
index 3af55b49..5bd82551 100644
--- a/tests/core_tests/chaingen.cpp
+++ b/tests/core_tests/chaingen.cpp
@@ -159,7 +159,15 @@ void test_generator::add_block(const currency::block& blk,
   get_block_reward(is_pos_block(blk), misc_utils::median(block_sizes), block_size, already_generated_coins, block_reward, currency::get_block_height(blk));
 
   m_blocks_info[get_block_hash(blk)] = block_info(blk, already_generated_coins + block_reward, block_size, cum_diff, tx_list, ks_hash);
-  LOG_PRINT_MAGENTA("ADDED_BLOCK[" << get_block_hash(blk) << "][" << (is_pos_block(blk)? "PoS":"PoW") <<"][" << get_block_height(blk) << "][cumul_diff:" << cum_diff << "]", LOG_LEVEL_0);
+ 
+  
+  std::stringstream ss_tx_hashes;
+  for (auto& h : blk.tx_hashes)
+  {
+    ss_tx_hashes << "    [tx]: " << h << ENDL;
+  }
+
+  LOG_PRINT_MAGENTA("ADDED_BLOCK[" << get_block_hash(blk) << "][" << (is_pos_block(blk)? "PoS":"PoW") <<"][" << get_block_height(blk) << "][cumul_diff:" << cum_diff << "]" << ENDL << ss_tx_hashes.str(), LOG_LEVEL_0);
 }
 
 void test_generator::add_block_info(const block_info& bi)
diff --git a/tests/core_tests/chaingen_main.cpp b/tests/core_tests/chaingen_main.cpp
index 96f485e0..0c49e02a 100644
--- a/tests/core_tests/chaingen_main.cpp
+++ b/tests/core_tests/chaingen_main.cpp
@@ -900,7 +900,7 @@ int main(int argc, char* argv[])
     GENERATE_AND_PLAY(alt_blocks_validation_and_same_new_amount_in_two_txs);
     GENERATE_AND_PLAY(alt_blocks_with_the_same_txs);
     GENERATE_AND_PLAY(chain_switching_when_out_spent_in_alt_chain_mixin);
-    // GENERATE_AND_PLAY(chain_switching_when_out_spent_in_alt_chain_ref_id);
+    GENERATE_AND_PLAY(chain_switching_when_out_spent_in_alt_chain_ref_id);
 
 
     // miscellaneous tests
diff --git a/tests/core_tests/multisig_wallet_tests.cpp b/tests/core_tests/multisig_wallet_tests.cpp
index 88c86b24..32e7468d 100644
--- a/tests/core_tests/multisig_wallet_tests.cpp
+++ b/tests/core_tests/multisig_wallet_tests.cpp
@@ -47,7 +47,7 @@ void transfer_multisig(tools::wallet2& w,
 
     // prepare transaction will sign ms input partially with wallet's keys - it needed to be signed fully with the others
     tools::construct_tx_param ctp = AUTO_VAL_INIT(ctp);
-    tools::finalize_tx_param ftp = AUTO_VAL_INIT(ftp);
+    currency::finalize_tx_param ftp = AUTO_VAL_INIT(ftp);
     ctp.attachments = attachments;
     ctp.crypt_address = crypt_address;
     ctp.dsts = dsts;