diff --git a/include/osmocom/trau/trau_sync.h b/include/osmocom/trau/trau_sync.h
index ffda02a..c40727c 100644
--- a/include/osmocom/trau/trau_sync.h
+++ b/include/osmocom/trau/trau_sync.h
@@ -2,7 +2,10 @@
 #include <osmocom/core/bits.h>
 #include <osmocom/core/fsm.h>
 
-enum osmo_tray_sync_pat_id {
+/* backwards compatibility */
+#define osmo_tray_sync_pat_id osmo_trau_sync_pat_id
+
+enum osmo_trau_sync_pat_id {
 	OSMO_TRAU_SYNCP_16_FR_EFR,
 	OSMO_TRAU_SYNCP_8_HR,
 	OSMO_TRAU_SYNCP_8_AMR_LOW,
@@ -15,7 +18,7 @@
 
 struct osmo_fsm_inst *
 osmo_trau_sync_alloc(void *ctx, const char *name, frame_out_cb_t frame_out_cb,
-		     enum osmo_tray_sync_pat_id pat_id, void *user_data);
+		     enum osmo_trau_sync_pat_id pat_id, void *user_data);
 
 void osmo_trau_sync_rx_ubits(struct osmo_fsm_inst *fi, const ubit_t *bits, size_t n_bits);
-void osmo_trau_sync_set_pat(struct osmo_fsm_inst *fi, enum osmo_tray_sync_pat_id pat_id);
+void osmo_trau_sync_set_pat(struct osmo_fsm_inst *fi, enum osmo_trau_sync_pat_id pat_id);
diff --git a/src/trau/trau_sync.c b/src/trau/trau_sync.c
index b36e7c1..814ed88 100644
--- a/src/trau/trau_sync.c
+++ b/src/trau/trau_sync.c
@@ -492,7 +492,7 @@
 
 struct osmo_fsm_inst *
 osmo_trau_sync_alloc(void *ctx, const char *name, frame_out_cb_t frame_out_cb,
-		     enum osmo_tray_sync_pat_id pat_id, void *user_data)
+		     enum osmo_trau_sync_pat_id pat_id, void *user_data)
 {
 	struct trau_rx_sync_state *tss;
 	struct osmo_fsm_inst *fi;
@@ -523,7 +523,7 @@
 	return fi;
 }
 
-void osmo_trau_sync_set_pat(struct osmo_fsm_inst *fi, enum osmo_tray_sync_pat_id pat_id)
+void osmo_trau_sync_set_pat(struct osmo_fsm_inst *fi, enum osmo_trau_sync_pat_id pat_id)
 {
 	struct trau_rx_sync_state *tss = fi->priv;