diff --git a/client.c b/client.c
index 9b476f0..2d53b56 100644
--- a/client.c
+++ b/client.c
@@ -295,8 +295,8 @@ void selectTunnel(SSL* ssl, int sockfd, int tunfd) {
 
 //获取服务端分配的虚拟IP
 int recvVirtualIP(SSL* ssl) {
-    char buf[10];
-    SSL_read(ssl,buf,BUFF_SIZE);
+    char buf[10] = {0};
+    SSL_read(ssl,buf,9);
     int virtualIP = atoi(buf);
     printf("virtualIP: 192.168.53.%d/24\n",virtualIP);
     return virtualIP;
@@ -350,4 +350,4 @@ int main(int argc, char *argv[]) {
     SSL_free(ssl);
     close(sockfd);
     return 0;
-}
\ No newline at end of file
+}