diff --git a/wchat/common/HttpClient.php b/wchat/common/HttpClient.php
index a62671e..e83fe9c 100644
--- a/wchat/common/HttpClient.php
+++ b/wchat/common/HttpClient.php
@@ -694,6 +694,8 @@ class HttpClient
 			curl_setopt($ch, CURLOPT_POST, 1);
 			if (!is_string($data)) {
 				curl_setopt($ch, CURLOPT_POSTFIELDS, $this->mergeParams($data));
+			} else {
+				curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
 			}
 		}
 
diff --git a/wchat/wx/Recharge.php b/wchat/wx/Recharge.php
index fc9c68e..b0ac653 100644
--- a/wchat/wx/Recharge.php
+++ b/wchat/wx/Recharge.php
@@ -117,8 +117,6 @@ class Recharge extends SmallProgram
 		$data['sign'] = Help::sign($data, $key, $sign_type);
 		$data['sign_type'] = $sign_type;
 
-		var_dump($data);
-
 		return Help::toXml($data);
 	}