diff --git a/include/bitcoin/node/define.hpp b/include/bitcoin/node/define.hpp
index 4aae9b57..6b7758bf 100644
--- a/include/bitcoin/node/define.hpp
+++ b/include/bitcoin/node/define.hpp
@@ -57,7 +57,7 @@ typedef std::function<void(const code&, uint64_t)> estimate_handler;
 
 /// Organization types.
 typedef std::function<void(const code&, size_t)> organize_handler;
-typedef database::store<database::map> store;
+typedef database::store<database::mmap> store;
 typedef database::query<store> query;
 
 /// Work types.
diff --git a/src/settings.cpp b/src/settings.cpp
index 96414751..3205abda 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -37,7 +37,7 @@ settings::settings() NOEXCEPT
     thread_priority{ true },
     allow_overlapped{ true },
     allow_batch_race{ true },
-    batch_signatures{ 100'000 },
+    batch_signatures{ 0 },
     minimum_fee_rate{ 0.0 },
     minimum_bump_rate{ 0.0 },
     allowed_deviation{ 1.5 },
diff --git a/test/settings.cpp b/test/settings.cpp
index ef669b09..4574cb61 100644
--- a/test/settings.cpp
+++ b/test/settings.cpp
@@ -40,7 +40,7 @@ BOOST_AUTO_TEST_CASE(settings__node__default_context__expected)
     BOOST_REQUIRE_EQUAL(node.minimum_fee_rate, 0.0);
     BOOST_REQUIRE_EQUAL(node.minimum_bump_rate, 0.0);
     BOOST_REQUIRE_EQUAL(node.allowed_deviation, 1.5);
-    BOOST_REQUIRE_EQUAL(node.batch_signatures, 100'000_u64);
+    BOOST_REQUIRE_EQUAL(node.batch_signatures, 0_u64);
     BOOST_REQUIRE_EQUAL(node.announcement_cache, 42_u16);
     BOOST_REQUIRE_EQUAL(node.fee_estimate_horizon, 0u);
     BOOST_REQUIRE_EQUAL(node.maximum_height, 0_u32);