diff --git a/src/classic/avrcp.h b/src/classic/avrcp.h
index 78165ac3f..79f915310 100644
--- a/src/classic/avrcp.h
+++ b/src/classic/avrcp.h
@@ -148,8 +148,14 @@ typedef enum {
 
 typedef enum {
     AVRCP_PDU_ID_GET_CAPABILITIES = 0x10,
+    AVRCP_PDU_ID_LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES, 
+    AVRCP_PDU_ID_LIST_PLAYER_APPLICATION_SETTING_VALUES,
     AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE = 0x13,
     AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE = 0x14,
+    AVRCP_PDU_ID_GET_PLAYER_APPLICATION_SETTING_ATTRIBUTE_TEXT,
+    AVRCP_PDU_ID_GET_PLAYER_APPLICATION_SETTING_VALUE_TEXT,
+    AVRCP_PDU_ID_INFORM_DISPLAYABLE_CHARACTERSET,
+    AVRCP_PDU_ID_INFORM_BATTERY_STATUS_OF_CT,
     AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES = 0x20,
     AVRCP_PDU_ID_GET_PLAY_STATUS = 0x30,
     AVRCP_PDU_ID_REGISTER_NOTIFICATION = 0x31,
@@ -436,7 +442,7 @@ typedef enum {
     AVRCP_BROWSING_NOW_PLAYING
 } avrcp_browsing_scope_t;
 
-typedef enum{
+typedef enum {
     AVRCP_REMOTE_CAPABILITIES_NONE = 0,
     AVRCP_REMOTE_CAPABILITIES_W4_QUERY_RESULT,
     AVRCP_REMOTE_CAPABILITIES_KNOWN