diff --git a/wchat/common/HttpClient.php b/wchat/common/HttpClient.php
index 275eaac..b924aef 100644
--- a/wchat/common/HttpClient.php
+++ b/wchat/common/HttpClient.php
@@ -664,11 +664,11 @@ class HttpClient
 		if (!empty($this->agent)) {
 			curl_setopt($ch, CURLOPT_USERAGENT, $this->agent);
 		}
-		if ($this->getSslCertFile()) {
-			curl_setopt($ch, CURLOPT_SSLCERT, $this->getSslCertFile());
+		if (file_exists($cert = $this->getSslCertFile())) {
+			curl_setopt($ch, CURLOPT_SSLCERT, $cert);
 		}
-		if ($this->getSslKeyFile()) {
-			curl_setopt($ch, CURLOPT_SSLKEY, $this->getSslKeyFile());
+		if (file_exists($key = $this->getSslKeyFile())) {
+			curl_setopt($ch, CURLOPT_SSLKEY, $key);
 		}
 		curl_setopt($ch, CURLOPT_NOBODY, FALSE);
 		curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 1);   // 超时设置