diff --git a/kernel/tests.c b/kernel/tests.c
index a761ef95..fe4ae8ac 100644
--- a/kernel/tests.c
+++ b/kernel/tests.c
@@ -158,7 +158,7 @@ void srv_on_conn(ServerEventArgs* e)
 
 void* server_task(void* e)
 {
-    int i = 0;
+    int i = 0, err = 0;
     int tmp1,tmp2;
     char buff[32];
 
@@ -177,10 +177,11 @@ void* server_task(void* e)
     tmp1 = get_clock_tick();
     for (i = 0; i < 1024*4*4*4; i++)
     {
-         udelay(1000);
+            sleep(1);
 
-            if (srv_sendBuffer(&srv,0,buff,sizeof(buff))< 0)
-                    SHELLDEBUGPRINTF("err");
+            err = srv_sendBuffer(&srv,0,buff,sizeof(buff));
+            if ( err < 0)
+                    SHELLDEBUGPRINTF("err: % d", err);
 
             if (!(i%100))
                 SHELLDEBUGPRINTF("\r-%d-",i);