diff --git a/unittests/state_history_tests.cpp b/unittests/state_history_tests.cpp
index 711c89be5fe..82ffd19b49d 100644
--- a/unittests/state_history_tests.cpp
+++ b/unittests/state_history_tests.cpp
@@ -931,6 +931,11 @@ BOOST_AUTO_TEST_CASE(test_deltas_kv) {
       BOOST_REQUIRE_EQUAL(key_values[0].contract.to_string(), "kvtable");
       BOOST_REQUIRE_EQUAL(key_values[0].payer.to_string(), "kvtable");
 
+      std::string key = string(key_values[0].key.pos, key_values[0].key.remaining());
+      std::string val = string(key_values[0].value.pos, key_values[0].value.remaining());
+      BOOST_REQUIRE_EQUAL(fc::to_hex(key.data(), key.size()), "00");
+      BOOST_REQUIRE_EQUAL(fc::to_hex(val.data(), val.size()), "7897");
+
       chain.produce_block();
 
       result = chain.find_table_delta("key_value");
@@ -938,11 +943,19 @@ BOOST_AUTO_TEST_CASE(test_deltas_kv) {
 
       result = chain.find_table_delta("key_value", true);
       BOOST_REQUIRE(result.first);
+
+      key_values = chain.deserialize_data<eosio::ship_protocol::key_value_v0, eosio::ship_protocol::key_value>(result.second);
+      BOOST_REQUIRE_EQUAL(key_values.size(), 1);
       BOOST_REQUIRE_EQUAL(result.second->rows.obj[0].first, 2);
 
       BOOST_REQUIRE_EQUAL(key_values[0].contract.to_string(), "kvtable");
       BOOST_REQUIRE_EQUAL(key_values[0].payer.to_string(), "kvtable");
 
+      key = string(key_values[0].key.pos, key_values[0].key.remaining());
+      val = string(key_values[0].value.pos, key_values[0].value.remaining());
+      BOOST_REQUIRE_EQUAL(fc::to_hex(key.data(), key.size()), "00");
+      BOOST_REQUIRE_EQUAL(fc::to_hex(val.data(), val.size()), "7897");
+
       chain.produce_block();
 
       trace = chain.push_action("kvtable"_n, "erase"_n, "kvtable"_n, mutable_variant_object()("contract", "kvtable"_n)("k", "00"));