diff --git a/components/bt/include/esp32/include/esp_bt.h b/components/bt/include/esp32/include/esp_bt.h
index 51b23aa8fd..390c62b15f 100644
--- a/components/bt/include/esp32/include/esp_bt.h
+++ b/components/bt/include/esp32/include/esp_bt.h
@@ -326,6 +326,8 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg);
 
 /**
  * @brief  De-initialize BT controller to free resource and delete task.
+ *         You should stop advertising and scanning, as well as
+ *         disconnect all existing connections before de-initializing BT controller.
  *
  * This function should be called only once, after any other BT functions are called.
  * @return  ESP_OK - success, other - failed
diff --git a/components/bt/include/esp32c3/include/esp_bt.h b/components/bt/include/esp32c3/include/esp_bt.h
index a1f2551e2c..2874406dee 100644
--- a/components/bt/include/esp32c3/include/esp_bt.h
+++ b/components/bt/include/esp32c3/include/esp_bt.h
@@ -337,6 +337,8 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg);
 
 /**
  * @brief  De-initialize BT controller to free resource and delete task.
+ *         You should stop advertising and scanning, as well as
+ *         disconnect all existing connections before de-initializing BT controller.
  *
  * This function should be called only once, after any other BT functions are called.
  * This function is not whole completed, esp_bt_controller_init cannot called after this function.
diff --git a/components/bt/include/esp32s3/include/esp_bt.h b/components/bt/include/esp32s3/include/esp_bt.h
index 0cda576c20..2127a8a7f7 100644
--- a/components/bt/include/esp32s3/include/esp_bt.h
+++ b/components/bt/include/esp32s3/include/esp_bt.h
@@ -260,6 +260,8 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg);
 
 /**
  * @brief  De-initialize BT controller to free resource and delete task.
+ *         You should stop advertising and scanning, as well as
+ *         disconnect all existing connections before de-initializing BT controller.
  *
  * This function should be called only once, after any other BT functions are called.
  * This function is not whole completed, esp_bt_controller_init cannot called after this function.