diff --git a/libburn/mmc.c b/libburn/mmc.c
index d3bd5f2..f36cdc9 100644
--- a/libburn/mmc.c
+++ b/libburn/mmc.c
@@ -824,6 +824,7 @@ int mmc_setup_drive(struct burn_drive *d)
 	d->get_nwa = mmc_get_nwa;
 	d->close_disc = mmc_close_disc;
 	d->close_session = mmc_close_session;
+	d->close_track_session = mmc_close;
 	d->read_buffer_capacity = mmc_read_buffer_capacity;
 
 	/* ts A61020 */
diff --git a/libburn/sg-freebsd.c b/libburn/sg-freebsd.c
index fcdf43f..c2d92ef 100644
--- a/libburn/sg-freebsd.c
+++ b/libburn/sg-freebsd.c
@@ -481,6 +481,7 @@ static void enumerate_common(char *fname, int bus_no, int host_no,
 	out.get_nwa = mmc_get_nwa;
 	out.close_disc = mmc_close_disc;
 	out.close_session = mmc_close_session;
+	out.close_track_session = mmc_close;
 	out.read_buffer_capacity = mmc_read_buffer_capacity;
 	out.idata = malloc(sizeof(struct burn_scsi_inquiry_data));
 	out.idata->valid = 0;
diff --git a/libburn/transport.h b/libburn/transport.h
index fa55030..5ef987e 100644
--- a/libburn/transport.h
+++ b/libburn/transport.h
@@ -189,6 +189,10 @@ struct burn_drive
 	void (*close_disc) (struct burn_write_opts * o);
 	void (*close_session) ( struct burn_write_opts * o);
 
+	/* ts A61029 */
+	void (*close_track_session) ( struct burn_write_opts * o,
+				int session, int track);
+
 	int (*test_unit_ready) (struct burn_drive * d);
 	void (*probe_write_modes) (struct burn_drive * d);
 	struct params params;