diff --git a/src/classic/hfp_hf.c b/src/classic/hfp_hf.c
index 38f557721..197800fb1 100644
--- a/src/classic/hfp_hf.c
+++ b/src/classic/hfp_hf.c
@@ -2264,6 +2264,10 @@ void hfp_hf_create_sdp_record(uint8_t * service, uint32_t service_record_handle,
 	de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features);
 }
 
+void hfp_hf_register_custom_at_command(hfp_custom_at_command_t * custom_at_command){
+    hfp_register_custom_hf_command(custom_at_command);
+}
+
 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){
 	btstack_assert(callback != NULL);
     
diff --git a/src/classic/hfp_hf.h b/src/classic/hfp_hf.h
index f658955cc..52ede0aa7 100644
--- a/src/classic/hfp_hf.h
+++ b/src/classic/hfp_hf.h
@@ -559,6 +559,12 @@ int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle);
  */
 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command);
 
+/**
+ * @brief Register custom AT command.
+ * @param hfp_custom_at_command (with '+' prefix)
+ */
+void hfp_hf_register_custom_at_command(hfp_custom_at_command_t * custom_at_command);
+
 /**
  * @brief De-Init HFP HF
  */