diff --git a/src/classic/sdp_client.c b/src/classic/sdp_client.c
index fa2e82a63..837155bb7 100644
--- a/src/classic/sdp_client.c
+++ b/src/classic/sdp_client.c
@@ -715,7 +715,7 @@ uint8_t sdp_client_query_uuid128(btstack_packet_handler_t callback, bd_addr_t re
 }
 
 #ifdef ENABLE_SDP_EXTRA_QUERIES
-uint8_t sdp_client_service_attribute_search(btstack_packet_handler_t callback, bd_addr_t remote, uint32_t search_service_record_handle, uint8_t * des_attribute_id_list){
+uint8_t sdp_client_service_attribute_search(btstack_packet_handler_t callback, bd_addr_t remote, uint32_t search_service_record_handle, const uint8_t * des_attribute_id_list){
 
     if (!sdp_client_ready()) return SDP_QUERY_BUSY;
 
@@ -730,7 +730,7 @@ uint8_t sdp_client_service_attribute_search(btstack_packet_handler_t callback, b
     return 0;
 }
 
-uint8_t sdp_client_service_search(btstack_packet_handler_t callback, bd_addr_t remote, uint8_t * des_service_search_pattern){
+uint8_t sdp_client_service_search(btstack_packet_handler_t callback, bd_addr_t remote, const uint8_t * des_service_search_pattern){
 
     if (!sdp_client_ready()) return SDP_QUERY_BUSY;
 
diff --git a/src/classic/sdp_client.h b/src/classic/sdp_client.h
index b1ac44a51..5f804f135 100644
--- a/src/classic/sdp_client.h
+++ b/src/classic/sdp_client.h
@@ -112,6 +112,9 @@ uint8_t sdp_client_service_attribute_search(btstack_packet_handler_t callback, b
  */
 uint8_t sdp_client_service_search(btstack_packet_handler_t callback, bd_addr_t remote, const uint8_t * des_service_search_pattern);
 
+#ifdef ENABLE_SDP_EXTRA_QUERIES
+void sdp_client_parse_service_record_handle_list(uint8_t* packet, uint16_t total_count, uint16_t current_count);
+#endif
 
 /* API_END */