diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c b/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c
index aede8cabe..bee00441f 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c
@@ -329,7 +329,7 @@ void wiz_client_op_test(int argc, char *argv[]) {
   while (1) {
     int ret =
         wiz_client_op(client_sock, buf, g_wiznet_buf_size, ip, port, SEND_DATA);
-    if (ret <= 0) {
+    if (ret < 0) {
       KPrintf("[W5500] Client Op Failed.\n");
     }
     MdelayKTask(10);