diff --git a/nano/core_test/active_transactions.cpp b/nano/core_test/active_transactions.cpp
index e9364d74..683cb3a8 100644
--- a/nano/core_test/active_transactions.cpp
+++ b/nano/core_test/active_transactions.cpp
@@ -86,7 +86,6 @@ TEST (active_transactions, adjusted_difficulty_priority)
 
 TEST (active_transactions, keep_local)
 {
-	bool delay_frontier_confirmation_height_updating = true;
 	nano::system system;
 	nano::node_config node_config (24000, system.logging);
 	node_config.enable_voting = false;
diff --git a/nano/core_test/block_store.cpp b/nano/core_test/block_store.cpp
index 0bdb5a88..bd9b3279 100644
--- a/nano/core_test/block_store.cpp
+++ b/nano/core_test/block_store.cpp
@@ -767,7 +767,6 @@ TEST (block_store, cemented_count)
 	auto transaction (store.tx_begin_write ());
 	ASSERT_EQ (0, store.cemented_count (transaction));
 	nano::genesis genesis;
-	auto hash (genesis.hash ());
 	store.initialize (transaction, genesis);
 	ASSERT_EQ (1, store.cemented_count (transaction));
 }
diff --git a/nano/core_test/network.cpp b/nano/core_test/network.cpp
index 4b9b4ebd..b84040cd 100644
--- a/nano/core_test/network.cpp
+++ b/nano/core_test/network.cpp
@@ -2218,7 +2218,6 @@ TEST (confirmation_height, pending_observer_callbacks)
 	nano::block_hash latest (node->latest (nano::test_genesis_key.pub));
 
 	nano::keypair key1;
-	auto & store = node->store;
 	nano::send_block send (latest, key1.pub, nano::genesis_amount - nano::Gxrb_ratio, nano::test_genesis_key.prv, nano::test_genesis_key.pub, system.work.generate (latest));
 	auto send1 = std::make_shared<nano::send_block> (send.hash (), key1.pub, nano::genesis_amount - nano::Gxrb_ratio * 2, nano::test_genesis_key.prv, nano::test_genesis_key.pub, system.work.generate (send.hash ()));
 
diff --git a/nano/core_test/node.cpp b/nano/core_test/node.cpp
index bb0ae1fb..fa4ac949 100644
--- a/nano/core_test/node.cpp
+++ b/nano/core_test/node.cpp
@@ -2310,10 +2310,10 @@ TEST (node, vote_by_hash_bundle)
 		system.nodes[0]->block_confirm (send);
 	}
 
-	// Verify bundling. We're content with 8 hashes for the test, although
-	// reaching 12 should be common on most hardware.
-	system.deadline_set (10s);
-	while (max_hashes.load () < 8)
+	// Verify that bundling occurs. While reaching 12 should be common on most hardware in release mode,
+	// we set this low enough to allow the test to pass on CI/with santitizers.
+	system.deadline_set (20s);
+	while (max_hashes.load () < 3)
 	{
 		ASSERT_NO_ERROR (system.poll ());
 	}