diff --git a/mobile/source/helpers/dalianpay/demo/dalianpay.php b/mobile/source/helpers/dalianpay/demo/dalianpay.php
index faac9cc..7849b52 100644
--- a/mobile/source/helpers/dalianpay/demo/dalianpay.php
+++ b/mobile/source/helpers/dalianpay/demo/dalianpay.php
@@ -230,7 +230,7 @@ class dalianpay{
 		$response_data_crypted = $response['data'];
 		$response_sign = $response['sign'];
 		// echo "\r\n";
-		// echo "[response sign]: {$response_sign}";
+		echo "[response sign]: {$response_sign}";
 		// echo "\r\n";
 		// echo "[response data (ciphertext)]: {$response_data_crypted}";