diff --git a/nano/core_test/bootstrap.cpp b/nano/core_test/bootstrap.cpp
index e17867c101..1beb10835a 100644
--- a/nano/core_test/bootstrap.cpp
+++ b/nano/core_test/bootstrap.cpp
@@ -1536,19 +1536,18 @@ TEST (frontier_req, confirmed_frontier)
 {
 	nano::system system (1);
 	auto node1 = system.nodes[0];
-	nano::raw_key priv_key;
+	nano::keypair key_before_genesis;
 	// Public key before genesis in accounts table
-	while (nano::pub_key (priv_key).number () >= nano::dev::genesis_key.pub.number ())
+	while (key_before_genesis.pub.number () >= nano::dev::genesis_key.pub.number ())
 	{
-		priv_key = nano::keypair ().prv;
+		key_before_genesis = nano::keypair ();
 	}
-	nano::keypair key_before_genesis (priv_key.to_string ());
+	nano::keypair key_after_genesis;
 	// Public key after genesis in accounts table
-	while (nano::pub_key (priv_key).number () <= nano::dev::genesis_key.pub.number ())
+	while (key_after_genesis.pub.number () <= nano::dev::genesis_key.pub.number ())
 	{
-		priv_key = nano::keypair ().prv;
+		key_after_genesis = nano::keypair ();
 	}
-	nano::keypair key_after_genesis (priv_key.to_string ());
 	nano::state_block_builder builder;
 
 	auto send1 = builder
diff --git a/nano/core_test/uint256_union.cpp b/nano/core_test/uint256_union.cpp
index bde76e3da5..89300e16bb 100644
--- a/nano/core_test/uint256_union.cpp
+++ b/nano/core_test/uint256_union.cpp
@@ -1,8 +1,11 @@
+#include <nano/crypto_lib/random_pool.hpp>
 #include <nano/secure/common.hpp>
 #include <nano/test_common/testutil.hpp>
 
 #include <gtest/gtest.h>
 
+#include <thread>
+
 namespace
 {
 template <typename Union, typename Bound>
@@ -567,3 +570,19 @@ void check_operator_greater_than (Num lhs, Num rhs)
 	ASSERT_FALSE (rhs > rhs);
 }
 }
+
+TEST (random_pool, multithreading)
+{
+	std::vector<std::thread> threads;
+	for (auto i = 0; i < 100; ++i)
+	{
+		threads.emplace_back ([] () {
+			nano::uint256_union number;
+			nano::random_pool::generate_block (number.bytes.data (), number.bytes.size ());
+		});
+	}
+	for (auto & i : threads)
+	{
+		i.join ();
+	}
+}
diff --git a/tsan_suppressions b/tsan_suppressions
index 85f74e588b..e08006cef7 100644
--- a/tsan_suppressions
+++ b/tsan_suppressions
@@ -1,2 +1,4 @@
 race:mdb.c
 race:rocksdb
+race:Rijndael::Base::FillEncTable
+race:Rijndael::Base::FillDecTable