diff --git a/kernel/tests.c b/kernel/tests.c
index 494b7c5a..c2d84c81 100644
--- a/kernel/tests.c
+++ b/kernel/tests.c
@@ -152,6 +152,7 @@ void* server_task(void* e)
     struct sockaddr_in serv_addr, cli_addr;
     int  n;
     uint64_t tmp1,tmp2;
+    int err;
 
     /* First call to socket() function */
     sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
@@ -218,9 +219,9 @@ void* server_task(void* e)
     {
         if (!(n%100))
         kprintf("%d-",n);
-        if (send(newsockfd,buffer,sizeof(buffer),0) < 0);
+        if (err = send(newsockfd,buffer,sizeof(buffer),0) < 0);
         {
-            kprintf("error on sending");
+            kprintf("error on sending: %d",err);
             break;
         }
  //       if (!(n%100))