diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java
index f4a1c3d00..a3a9dc7a9 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java
@@ -343,7 +343,7 @@ public CloseableHttpClient initApiV3HttpClient() throws WxPayException {
         certificate = (X509Certificate) objects[1];
         this.certSerialNo = certificate.getSerialNumber().toString(16).toUpperCase();
       }
-      if (certificate == null && StringUtils.isBlank(this.getCertSerialNo()) && (StringUtils.isNotBlank(this.getPrivateCertPath()) || StringUtils.isNotBlank(this.getPrivateCertString())) || this.getPrivateCertContent() != null) {
+      if (certificate == null && StringUtils.isBlank(this.getCertSerialNo()) && (StringUtils.isNotBlank(this.getPrivateCertPath()) || StringUtils.isNotBlank(this.getPrivateCertString()) || this.getPrivateCertContent() != null)) {
         try (InputStream certInputStream = this.loadConfigInputStream(this.getPrivateCertString(), this.getPrivateCertPath(),
           this.privateCertContent, "privateCertPath")) {
           certificate = PemUtils.loadCertificate(certInputStream);