diff --git a/emulator/emulator-emscripten.cpp b/emulator/emulator-emscripten.cpp
index e5d4e42d..efb14eff 100644
--- a/emulator/emulator-emscripten.cpp
+++ b/emulator/emulator-emscripten.cpp
@@ -115,7 +115,7 @@ td::Result<GetMethodParams> decode_get_method_params(const char* json) {
       return td::Status::Error("EC must be of type Object");
     }
     td::StringBuilder ec_builder;
-    auto ec_obj = ec_field.get_object();
+    auto& ec_obj = ec_field.get_object();
     bool is_first = true;
     for (auto &field_value : ec_obj) {
       auto currency_id = field_value.first;
diff --git a/emulator/emulator_export_list b/emulator/emulator_export_list
index feb653e2..bd991cd7 100644
--- a/emulator/emulator_export_list
+++ b/emulator/emulator_export_list
@@ -17,6 +17,7 @@ _emulator_config_destroy
 _tvm_emulator_create
 _tvm_emulator_set_libraries
 _tvm_emulator_set_c7
+_tvm_emulator_set_extra_currencies
 _tvm_emulator_set_config_object
 _tvm_emulator_set_prev_blocks_info
 _tvm_emulator_set_gas_limit
diff --git a/emulator/test/emulator-tests.cpp b/emulator/test/emulator-tests.cpp
index a0be447f..ae273ddf 100644
--- a/emulator/test/emulator-tests.cpp
+++ b/emulator/test/emulator-tests.cpp
@@ -445,7 +445,7 @@ TEST(Emulator, tvm_emulator_extra_currencies) {
   auto it = dict.begin();
   std::map<uint32_t, td::RefInt256> ec_balance;
   while (!it.eof()) {
-    auto id = td::BitArray<32>(it.cur_pos()).to_ulong();
+    auto id = static_cast<uint32_t>(td::BitArray<32>(it.cur_pos()).to_ulong());
     auto value_cs = it.cur_value();
     auto value = block::tlb::t_VarUInteger_32.as_integer(value_cs);
     ec_balance[id] = value;