diff --git a/hal/acdb.h b/hal/acdb.h
index 08026fb..24dcb8f 100644
--- a/hal/acdb.h
+++ b/hal/acdb.h
@@ -36,6 +36,7 @@
 typedef int (*acdb_reload_vocvoltable_t)(int);
 typedef int (*acdb_send_gain_dep_cal_t)(int, int, int, int, int);
 typedef int (*acdb_send_custom_top_t) (void);
+typedef int (*acdb_set_audio_cal_t) (void *, void *, uint32_t);
 
 struct meta_key_list {
     struct listnode list;