diff --git a/include/evm_runtime/config_wrapper.hpp b/include/evm_runtime/config_wrapper.hpp
index d0ab67a6..931cc019 100644
--- a/include/evm_runtime/config_wrapper.hpp
+++ b/include/evm_runtime/config_wrapper.hpp
@@ -58,8 +58,8 @@ struct config_wrapper {
     void update_consensus_parameters(eosio::asset ram_price_mb, uint64_t gas_price);
     void update_consensus_parameters2(std::optional<uint64_t> gas_txnewaccount, std::optional<uint64_t> gas_newaccount, std::optional<uint64_t> gas_txcreate, std::optional<uint64_t> gas_codedeposit, std::optional<uint64_t> gas_sset);
 
-    const consensus_parameter_data_type& get_consensus_param();
-    std::pair<const consensus_parameter_data_type &, bool> get_consensus_param_and_maybe_promote();
+    consensus_parameter_data_type get_consensus_param();
+    std::pair<consensus_parameter_data_type, bool> get_consensus_param_and_maybe_promote();
 
     void set_token_contract(eosio::name token_contract); // only set during init
     eosio::name get_token_contract() const;
diff --git a/src/actions.cpp b/src/actions.cpp
index fd67e941..4dcd2fb0 100644
--- a/src/actions.cpp
+++ b/src/actions.cpp
@@ -458,7 +458,7 @@ void evm_contract::process_tx(const runtime_config& rc, eosio::name miner, const
 
     auto current_version = _config->get_evm_version_and_maybe_promote();
 
-    std::pair<const consensus_parameter_data_type &, bool> gas_param_pair = _config->get_consensus_param_and_maybe_promote();
+    auto gas_param_pair = _config->get_consensus_param_and_maybe_promote();
     if (gas_param_pair.second) {
         // should not happen
         eosio::check(current_version >= 1, "gas param change requires evm_version >= 1");
diff --git a/src/config_wrapper.cpp b/src/config_wrapper.cpp
index 274c6203..bb308bab 100644
--- a/src/config_wrapper.cpp
+++ b/src/config_wrapper.cpp
@@ -324,13 +324,13 @@ void config_wrapper::update_consensus_parameters2(std::optional<uint64_t> gas_tx
     set_dirty();
 }
 
-const consensus_parameter_data_type& config_wrapper::get_consensus_param() {
+consensus_parameter_data_type config_wrapper::get_consensus_param() {
     // should not happen
     eosio::check(_cached_config.consensus_parameter.has_value(), "consensus_parameter not exist");
     return _cached_config.consensus_parameter->get_value(_cached_config.genesis_time, get_current_time());
 }
 
-std::pair<const consensus_parameter_data_type &, bool> config_wrapper::get_consensus_param_and_maybe_promote() {
+std::pair<consensus_parameter_data_type, bool> config_wrapper::get_consensus_param_and_maybe_promote() {
 
     // should not happen
     eosio::check(_cached_config.consensus_parameter.has_value(), "consensus_parameter not exist");
diff --git a/tests/gas_param_tests.cpp b/tests/gas_param_tests.cpp
index cd1d5ca3..53bccf1d 100644
--- a/tests/gas_param_tests.cpp
+++ b/tests/gas_param_tests.cpp
@@ -189,6 +189,38 @@ BOOST_FIXTURE_TEST_CASE(basic, gas_param_evm_tester) try {
 
 } FC_LOG_AND_RETHROW()
 
+BOOST_FIXTURE_TEST_CASE(gas_param_traces, gas_param_evm_tester) try {
+
+    init();
+
+    setversion(3, evm_account_name);
+    produce_blocks(2);
+
+    setgasparam(1, 2, 3, 4, 2900, evm_account_name);
+    produce_blocks(3);
+
+    evm_eoa evm1;
+    auto trace = transfer_token("alice"_n, evm_account_name, make_asset(1), evm1.address_0x());
+
+    BOOST_REQUIRE_EQUAL(trace->action_traces.size(), 5);
+    BOOST_ASSERT(trace->action_traces[0].act.name == "transfer"_n);
+    BOOST_ASSERT(trace->action_traces[1].act.name == "transfer"_n);
+    BOOST_ASSERT(trace->action_traces[2].act.name == "transfer"_n);
+    BOOST_ASSERT(trace->action_traces[3].act.name == "configchange"_n);
+    BOOST_ASSERT(trace->action_traces[4].act.name == "evmtx"_n);
+
+    auto cp = fc::raw::unpack<consensus_parameter_data_type>(trace->action_traces[3].act.data);
+
+    std::visit([&](auto& v){
+        BOOST_REQUIRE_EQUAL(v.gas_parameter.gas_txnewaccount, 1);
+        BOOST_REQUIRE_EQUAL(v.gas_parameter.gas_newaccount, 2);
+        BOOST_REQUIRE_EQUAL(v.gas_parameter.gas_txcreate, 3);
+        BOOST_REQUIRE_EQUAL(v.gas_parameter.gas_codedeposit, 4);
+        BOOST_REQUIRE_EQUAL(v.gas_parameter.gas_sset, 2900);
+    }, cp);
+
+} FC_LOG_AND_RETHROW()
+
 BOOST_FIXTURE_TEST_CASE(gas_param_G_txnewaccount, gas_param_evm_tester) try {
 
     uint64_t suggested_gas_price = 150'000'000'000ull;