diff --git a/sys/uart0/uart0.c b/sys/uart0/uart0.c
index 56dc5875a1..e53af73df9 100644
--- a/sys/uart0/uart0.c
+++ b/sys/uart0/uart0.c
@@ -25,7 +25,14 @@ static void uart0_loop(void)
 void board_uart0_init(void)
 {
     ringbuffer_init(&uart0_ringbuffer, buffer, UART0_BUFSIZE);
-    int pid = thread_create(uart0_thread_stack, sizeof(uart0_thread_stack), PRIORITY_MAIN - 1, CREATE_STACKTEST, uart0_loop, "uart0");
+    int pid = thread_create(
+            uart0_thread_stack,
+            sizeof(uart0_thread_stack),
+            PRIORITY_MAIN - 1,
+            CREATE_STACKTEST|CREATE_WOUT_YIELD,
+            uart0_loop,
+            "uart0"
+            );
     uart0_handler_pid = pid;
     puts("uart0_init() [OK]");
 }