diff --git a/src/mame/audio/wpcsnd.cpp b/src/mame/audio/wpcsnd.cpp
index 3852ffd55e2..d8fee1b5138 100644
--- a/src/mame/audio/wpcsnd.cpp
+++ b/src/mame/audio/wpcsnd.cpp
@@ -121,6 +121,10 @@ void wpcsnd_device::device_start()
 {
 	// resolve callback
 	m_reply_cb.resolve_safe();
+	// save states
+	save_item(NAME(m_latch));
+	save_item(NAME(m_reply));
+	save_item(NAME(m_reply_available));
 }
 
 void wpcsnd_device::device_reset()
diff --git a/src/mame/audio/wpcsnd.h b/src/mame/audio/wpcsnd.h
index 7d42ae4fef9..8ca0bd55a25 100644
--- a/src/mame/audio/wpcsnd.h
+++ b/src/mame/audio/wpcsnd.h
@@ -47,8 +47,8 @@ protected:
 	virtual void device_add_mconfig(machine_config &config) override;
 
 private:
-	uint8_t m_latch;
-	uint8_t m_reply;
+	uint8_t m_latch = 0;
+	uint8_t m_reply = 0;
 	bool m_reply_available;
 
 	// callback