diff --git a/src/mame/drivers/zac2650.c b/src/mame/drivers/zac2650.c
index dcce8909419..2dd0712d10c 100644
--- a/src/mame/drivers/zac2650.c
+++ b/src/mame/drivers/zac2650.c
@@ -193,6 +193,12 @@ PALETTE_INIT_MEMBER(zac2650_state, zac2650)
 	palette.set_pen_color(3,rgb_t::black);
 }
 
+static const s2636_interface s2636_config =
+{
+	0x100,
+	0, 0
+};
+
 /************************************************************************************************
 
  Video is slightly odd on these zac boards
@@ -258,7 +264,7 @@ static MACHINE_CONFIG_START( tinvader, zac2650_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("s2636snd", S2636, 0)
+	MCFG_S2636_ADD("s2636", s2636_config)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
 MACHINE_CONFIG_END
 
diff --git a/src/mame/includes/zac2650.h b/src/mame/includes/zac2650.h
index e55ba7896d4..ed7ae4c152c 100644
--- a/src/mame/includes/zac2650.h
+++ b/src/mame/includes/zac2650.h
@@ -8,7 +8,7 @@ public:
 		m_videoram(*this, "videoram"),
 		m_s2636_0_ram(*this, "s2636_0_ram"),
 		m_maincpu(*this, "maincpu"),
-		m_s2636_sound(*this, "s2636snd"),
+		m_s2636(*this, "s2636"),
 		m_gfxdecode(*this, "gfxdecode"),
 		m_screen(*this, "screen"),
 		m_palette(*this, "palette") { }
@@ -17,7 +17,7 @@ public:
 	required_shared_ptr<UINT8> m_s2636_0_ram;
 
 	required_device<cpu_device> m_maincpu;
-	required_device<s2636_device> m_s2636_sound;
+	required_device<s2636_device> m_s2636;
 	required_device<gfxdecode_device> m_gfxdecode;
 	required_device<screen_device> m_screen;
 	required_device<palette_device> m_palette;
diff --git a/src/mame/video/zac2650.c b/src/mame/video/zac2650.c
index d0451f933ab..adce84455e2 100644
--- a/src/mame/video/zac2650.c
+++ b/src/mame/video/zac2650.c
@@ -34,7 +34,7 @@ WRITE8_MEMBER(zac2650_state::zac_s2636_w)
 	m_gfxdecode->gfx(2)->mark_dirty(offset/8);
 	if (offset == 0xc7)
 	{
-		m_s2636_sound->soundport_w(0, data);
+		m_s2636->soundport_w(0, data);
 	}
 }