diff --git a/src/hw/machine.hpp b/src/hw/machine.hpp
index 84b261a..a3baea3 100644
--- a/src/hw/machine.hpp
+++ b/src/hw/machine.hpp
@@ -62,6 +62,7 @@ class machine {
 		m_cpu.deinit();
 		m_cmos.deinit();
 		m_nv2a.deinit();
+		m_smbus.deinit();
 	}
 	void start() { m_cpu.start(); }
 	void exit() { m_cpu.exit(); }
diff --git a/src/hw/smbus.cpp b/src/hw/smbus.cpp
index ffb471b..244acbc 100644
--- a/src/hw/smbus.cpp
+++ b/src/hw/smbus.cpp
@@ -281,6 +281,14 @@ smbus::reset()
 	m_block_off = 0;
 }
 
+void
+smbus::deinit()
+{
+	for (auto dev : m_devs) {
+		dev.second->deinit();
+	}
+}
+
 bool
 smbus::init()
 {
diff --git a/src/hw/smbus.hpp b/src/hw/smbus.hpp
index b38870e..206aad2 100644
--- a/src/hw/smbus.hpp
+++ b/src/hw/smbus.hpp
@@ -33,6 +33,7 @@ class smbus {
 public:
 	smbus(machine *machine) : m_machine(machine) {}
 	bool init();
+	void deinit();
 	void reset();
 	void update_io_logging() { update_io(true); }
 	template<bool log = false>