diff --git a/tests/test_misc.cpp b/tests/test_misc.cpp
index 342b3dac..1b880835 100644
--- a/tests/test_misc.cpp
+++ b/tests/test_misc.cpp
@@ -86,7 +86,7 @@ TEST_CASE("periodic flush", "[periodic_flush]")
     auto test_sink = std::static_pointer_cast<sinks::test_sink_mt>(logger->sinks()[0]);
 
     spdlog::flush_every(std::chrono::seconds(1));
-    std::this_thread::sleep_for(std::chrono::milliseconds(1500));
+    std::this_thread::sleep_for(std::chrono::milliseconds(1250));
     REQUIRE(test_sink->flush_counter() == 1);
     spdlog::flush_every(std::chrono::seconds(0));
     spdlog::drop_all();
diff --git a/tests/test_registry.cpp b/tests/test_registry.cpp
index d306dba2..bd326ef0 100644
--- a/tests/test_registry.cpp
+++ b/tests/test_registry.cpp
@@ -110,4 +110,5 @@ TEST_CASE("disable automatic registration", "[registry]")
     REQUIRE(logger1->level() == log_level);
     REQUIRE(logger2->level() == log_level);
     spdlog::set_level(spdlog::level::info);
+    spdlog::set_automatic_registration(true);
 }