diff --git a/src/devices/sound/lc82310.cpp b/src/devices/sound/lc82310.cpp
index 119a12b033b..0693930e23c 100644
--- a/src/devices/sound/lc82310.cpp
+++ b/src/devices/sound/lc82310.cpp
@@ -35,9 +35,13 @@ void lc82310_device::device_start()
 	save_item(NAME(m_ckctl));
 	save_item(NAME(m_dictl));
 	save_item(NAME(m_doctl));
+	save_item(NAME(m_ctl_state));
+	save_item(NAME(m_ctl_cmd));
 	save_item(NAME(m_ctl_bits));
 	save_item(NAME(m_ctl_byte));
 	save_item(NAME(m_ctl_out_byte));
+
+	mp3dec->register_save(*this);
 }
 
 void lc82310_device::device_reset()
diff --git a/src/devices/sound/mas3507d.cpp b/src/devices/sound/mas3507d.cpp
index ddcf0d41b94..4036fba50f2 100644
--- a/src/devices/sound/mas3507d.cpp
+++ b/src/devices/sound/mas3507d.cpp
@@ -87,6 +87,8 @@ void mas3507d_device::device_start()
 	save_item(NAME(playback_status));
 
 	save_item(NAME(frame_channels));
+
+	mp3dec->register_save(*this);
 }
 
 void mas3507d_device::device_reset()
diff --git a/src/devices/sound/mp3_audio.cpp b/src/devices/sound/mp3_audio.cpp
index d6a45413e7d..c5ac8797195 100644
--- a/src/devices/sound/mp3_audio.cpp
+++ b/src/devices/sound/mp3_audio.cpp
@@ -29,6 +29,17 @@ mp3_audio::~mp3_audio()
 {
 }
 
+void mp3_audio::register_save(device_t &host)
+{
+	host.save_item(NAME(m_found_stream));
+	host.save_item(NAME(dec->header));
+	host.save_item(NAME(dec->reserv_buf));
+	host.save_item(NAME(dec->mdct_overlap));
+	host.save_item(NAME(dec->qmf_state));
+	host.save_item(NAME(dec->reserv));
+	host.save_item(NAME(dec->free_format_bytes));
+}
+
 void mp3_audio::clear()
 {
 	mp3dec_init(dec.get());
diff --git a/src/devices/sound/mp3_audio.h b/src/devices/sound/mp3_audio.h
index df75ddd1969..ffafdb1f219 100644
--- a/src/devices/sound/mp3_audio.h
+++ b/src/devices/sound/mp3_audio.h
@@ -19,6 +19,8 @@ public:
 	mp3_audio(const void *base);
 	~mp3_audio();
 
+	void register_save(device_t &host);
+
 	bool decode_buffer(int &pos, int limit, short *output, int &output_samples, int &sample_rate, int &channels);
 
 	void clear();