diff --git a/components/bt/include/esp32/include/esp_bt.h b/components/bt/include/esp32/include/esp_bt.h
index 8db30088b6..36faa7a308 100644
--- a/components/bt/include/esp32/include/esp_bt.h
+++ b/components/bt/include/esp32/include/esp_bt.h
@@ -67,7 +67,7 @@ typedef enum {
  *
  * @note Currently only ESP_BLE_SCA_500PPM and ESP_BLE_SCA_250PPM are supported
  */
-enum {
+typedef enum {
     ESP_BLE_SCA_500PPM     = 0,   /*!< BLE SCA at 500 ppm */
     ESP_BLE_SCA_250PPM,           /*!< BLE SCA at 250 ppm */
     ESP_BLE_SCA_150PPM,           /*!< BLE SCA at 150 ppm */