diff --git a/components/bt/host/bluedroid/api/include/api/esp_bt_defs.h b/components/bt/host/bluedroid/api/include/api/esp_bt_defs.h
index 51044d45c7..1cff4d52c1 100644
--- a/components/bt/host/bluedroid/api/include/api/esp_bt_defs.h
+++ b/components/bt/host/bluedroid/api/include/api/esp_bt_defs.h
@@ -70,7 +70,7 @@ typedef uint8_t esp_link_key[ESP_BT_OCTET16_LEN];      /* Link Key */
 
 #define ESP_BLE_CONN_INT_MIN                0x0006       /*!< relate to BTM_BLE_CONN_INT_MIN in stack/btm_ble_api.h */
 #define ESP_BLE_CONN_INT_MAX                0x0C80       /*!< relate to BTM_BLE_CONN_INT_MAX in stack/btm_ble_api.h */
-#define ESP_BLE_CONN_LATENCY_MAX            500          /*!< relate to ESP_BLE_CONN_LATENCY_MAX in stack/btm_ble_api.h */
+#define ESP_BLE_CONN_LATENCY_MAX            499          /*!< relate to ESP_BLE_CONN_LATENCY_MAX in stack/btm_ble_api.h */
 #define ESP_BLE_CONN_SUP_TOUT_MIN           0x000A       /*!< relate to BTM_BLE_CONN_SUP_TOUT_MIN in stack/btm_ble_api.h */
 #define ESP_BLE_CONN_SUP_TOUT_MAX           0x0C80       /*!< relate to ESP_BLE_CONN_SUP_TOUT_MAX in stack/btm_ble_api.h */
 #define ESP_BLE_CONN_PARAM_UNDEF            0xffff       /* use this value when a specific value not to be overwritten */ /* relate to ESP_BLE_CONN_PARAM_UNDEF in stack/btm_ble_api.h */
diff --git a/components/bt/host/bluedroid/stack/include/stack/btm_ble_api.h b/components/bt/host/bluedroid/stack/include/stack/btm_ble_api.h
index 5f7ca9eca6..0886b5b789 100644
--- a/components/bt/host/bluedroid/stack/include/stack/btm_ble_api.h
+++ b/components/bt/host/bluedroid/stack/include/stack/btm_ble_api.h
@@ -129,7 +129,7 @@ typedef UINT8   tBTM_BLE_SFP;
 #define BTM_BLE_EXT_SCAN_WIN_MAX        0xFFFF
 #define BTM_BLE_CONN_INT_MIN            0x0006
 #define BTM_BLE_CONN_INT_MAX            0x0C80
-#define BTM_BLE_CONN_LATENCY_MAX        500
+#define BTM_BLE_CONN_LATENCY_MAX        499
 #define BTM_BLE_CONN_SUP_TOUT_MIN       0x000A
 #define BTM_BLE_CONN_SUP_TOUT_MAX       0x0C80
 #define BTM_BLE_CONN_PARAM_UNDEF        0xffff      /* use this value when a specific value not to be overwritten */