diff --git a/tests/unit_tests/epee_levin_protocol_handler_async.cpp b/tests/unit_tests/epee_levin_protocol_handler_async.cpp
index ca110eb5..2dd3ffe2 100644
--- a/tests/unit_tests/epee_levin_protocol_handler_async.cpp
+++ b/tests/unit_tests/epee_levin_protocol_handler_async.cpp
@@ -242,6 +242,7 @@ namespace
       m_req_head.m_cb = m_in_data.size();
       m_req_head.m_have_to_return_data = true;
       m_req_head.m_command = expected_command;
+      m_req_head.m_return_code = LEVIN_OK;
       m_req_head.m_flags = LEVIN_PACKET_REQUEST;
       m_req_head.m_protocol_version = LEVIN_PROTOCOL_VER_1;