diff --git a/src/Plugin/Alipay/PreparePlugin.php b/src/Plugin/Alipay/PreparePlugin.php
index b7df836..8f9f52b 100644
--- a/src/Plugin/Alipay/PreparePlugin.php
+++ b/src/Plugin/Alipay/PreparePlugin.php
@@ -121,7 +121,7 @@ class PreparePlugin implements PluginInterface
         $exploded = explode('-----END CERTIFICATE-----', file_get_contents($path));
 
         foreach ($exploded as $cert) {
-            if (empty($cert)) {
+            if (empty(trim($cert))) {
                 continue;
             }
 
diff --git a/tests/Cert/alipayRootCert.crt b/tests/Cert/alipayRootCert.crt
index d370e5b..6bf33b6 100644
--- a/tests/Cert/alipayRootCert.crt
+++ b/tests/Cert/alipayRootCert.crt
@@ -85,4 +85,7 @@ UugDo9u8igJORYA+5ms0s5sCUySqbQ2R5z/GoceyI9LdxIVa1RjVX8pYOj8JFwtn
 DJN3ftSFvNMYwRuILKuqUYSHc2GPYiHVflDh5nDymCMOQFcFG3WsEuB+EYQPFgIU
 1DHmdZcz7Llx8UOZXX2JupWCYzK1XhJb+r4hK5ncf/w8qGtYlmyJpxk3hr1TfUJX
 Yf4Zr0fJsGuv
------END CERTIFICATE-----
\ No newline at end of file
+-----END CERTIFICATE-----
+
+
+