diff --git a/project/ble_peripheral/ble_app_bladder_patch/main.c b/project/ble_peripheral/ble_app_bladder_patch/main.c
index 3293cc9..5ad552a 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/main.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/main.c
@@ -1055,7 +1055,7 @@ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
             err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
             APP_ERROR_CHECK(err_code);
             
-            sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_CONN, m_conn_handle, 8);
+            sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_CONN, m_conn_handle, 4);
 
             // 2M PHY 요청 (지원 안 되면 자동으로 1M 유지)
             {