diff --git a/src/emu/machine.cpp b/src/emu/machine.cpp
index 24bc712de15..16375213a76 100644
--- a/src/emu/machine.cpp
+++ b/src/emu/machine.cpp
@@ -225,7 +225,7 @@ void running_machine::start()
 	m_soft_reset_timer = m_scheduler.timer_alloc(timer_expired_delegate(FUNC(running_machine::soft_reset), this));
 
 	// intialize UI input
-	m_ui_input = std::make_unique<ui_input_manager>(*this);
+	m_ui_input = make_unique_clear<ui_input_manager>(*this);
 
 	// init the osd layer
 	m_manager.osd().init(*this);
diff --git a/src/emu/uiinput.cpp b/src/emu/uiinput.cpp
index 241bcd6370a..3f9b95021e7 100644
--- a/src/emu/uiinput.cpp
+++ b/src/emu/uiinput.cpp
@@ -43,10 +43,6 @@ ui_input_manager::ui_input_manager(running_machine &machine)
 	m_current_mouse_x = -1;
 	m_current_mouse_y = -1;
 
-	memset(m_next_repeat, 0, sizeof(m_next_repeat));
-	memset(m_seqpressed, 0, sizeof(m_seqpressed));
-	memset(m_events, 0, sizeof(m_events));
-
 	/* add a frame callback to poll inputs */
 	machine.add_notifier(MACHINE_NOTIFY_FRAME, machine_notify_delegate(FUNC(ui_input_manager::frame_update), this));
 }