diff --git a/src/emu/cpu/psx/mdec.c b/src/emu/cpu/psx/mdec.c
index 8b5f8277588..6faf18f2c93 100644
--- a/src/emu/cpu/psx/mdec.c
+++ b/src/emu/cpu/psx/mdec.c
@@ -71,14 +71,14 @@ void psxmdec_device::device_start()
 		p_n_b5[ n + 512 ] = ( 255 >> 3 ) << 10;
 	}
 
-	state_save_register_global( machine(), n_0_command );
-	state_save_register_global( machine(), n_0_address );
-	state_save_register_global( machine(), n_0_size );
-	state_save_register_global( machine(), n_1_command );
-	state_save_register_global( machine(), n_1_status );
-	state_save_register_global_array( machine(), p_n_quantize_y );
-	state_save_register_global_array( machine(), p_n_quantize_uv );
-	state_save_register_global_array( machine(), p_n_cos );
+	save_item( NAME( n_0_command ) );
+	save_item( NAME( n_0_address ) );
+	save_item( NAME( n_0_size ) );
+	save_item( NAME( n_1_command ) );
+	save_item( NAME( n_1_status ) );
+	save_item( NAME( p_n_quantize_y ) );
+	save_item( NAME( p_n_quantize_uv ) );
+	save_item( NAME( p_n_cos ) );
 }
 
 #ifdef UNUSED_FUNCTION