diff --git a/components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h b/components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h
index 4b04b0dbef..4ce0096b09 100644
--- a/components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h
+++ b/components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h
@@ -520,7 +520,7 @@ esp_err_t esp_hf_ag_cops_response(esp_bd_addr_t remote_addr, char *name);
  *                  As a precondition to use this API, Service Level Connection shall exist with HFP client.
  *
  * @param[in]       remote_addr: remote bluetooth device address
- * @param[in]       index: the index of current call
+ * @param[in]       index: the index of current call, starting with 1, finishing response with 0 (send OK)
  * @param[in]       dir: call direction (incoming/outgoing)
  * @param[in]       current_call_state: current call state
  * @param[in]       mode: current call mode (voice/data/fax)
diff --git a/components/bt/host/bluedroid/btc/profile/std/hf_ag/btc_hf_ag.c b/components/bt/host/bluedroid/btc/profile/std/hf_ag/btc_hf_ag.c
index 88d7088f2f..4bf8cc0d39 100644
--- a/components/bt/host/bluedroid/btc/profile/std/hf_ag/btc_hf_ag.c
+++ b/components/bt/host/bluedroid/btc/profile/std/hf_ag/btc_hf_ag.c
@@ -535,7 +535,7 @@ static bt_status_t btc_hf_indchange_notification(bt_bdaddr_t *bd_addr,
         send_indicator_update(BTA_AG_IND_SIGNAL, signal);
         return BT_STATUS_SUCCESS;
     }
-    return BT_STATUS_SUCCESS;
+    return BT_STATUS_FAIL;
 }
 
 // +CIEV<...> for device status update, send other indicators, e.g. roaming, battery, call held and bearer