diff --git a/kernel/tests.c b/kernel/tests.c
index bb57c6e3..ab6e5eed 100644
--- a/kernel/tests.c
+++ b/kernel/tests.c
@@ -148,7 +148,7 @@ __inline int get_core_no(void)
 void* server_task(void* e)
 {
     int sockfd, newsockfd, portno, clilen;
-    char buffer[256];
+    char buffer[512];
     struct sockaddr_in serv_addr, cli_addr;
     int  n;
     uint64_t tmp1,tmp2;