diff --git a/paddle/pserver/LightNetwork.cpp b/paddle/pserver/LightNetwork.cpp
index 8c8ba0a2e51b85bde0544c6780b07130336a6bdd..61bd6d358dec650534ce4a5bb8e4ec6cb9f111b9 100644
--- a/paddle/pserver/LightNetwork.cpp
+++ b/paddle/pserver/LightNetwork.cpp
@@ -384,19 +384,22 @@ void SocketClient::TcpClient(const std::string &serverAddr, int serverPort) {
 
   /// Now connect to the server
   int retry_second = 0;
-  int error = 0;
   do {
-    error = connect(sockfd, (sockaddr *)&serv_addr, sizeof(serv_addr));
-    if (error == ECONNREFUSED) {
+    if (connect(sockfd, (sockaddr *)&serv_addr, sizeof(serv_addr)) == 0) {
+      break;
+    }
+
+    if (errno == ECONNREFUSED) {
       LOG(WARNING) << "connection refused by pserver, try again!";
       if (retry_second++ >= 7) {
         LOG(FATAL) << "connection refused by pserver, maybe pserver failed!";
       }
       std::this_thread::sleep_for(std::chrono::seconds(1));
     } else {
-      PCHECK(error >= 0) << "ERROR connecting to " << serverAddr;
+      PCHECK(errno != 0) << "ERROR connecting to " << serverAddr << ":"
+                         << serverPort << "errorno: " << errno;
     }
-  } while (error == ECONNREFUSED);
+  } while (errno == ECONNREFUSED);
 
   channel_.reset(new SocketChannel(sockfd, serverAddr));
   tcpRdma_ = F_TCP;