diff --git a/lwip/src/arch/sys_arch.c b/lwip/src/arch/sys_arch.c
index 486d2faa..4df052db 100644
--- a/lwip/src/arch/sys_arch.c
+++ b/lwip/src/arch/sys_arch.c
@@ -84,12 +84,15 @@ sys_thread_t sys_thread_new(const char *name, lwip_thread_fn thread, void *arg,
 		int stacksize, int prio)
 {
 	int err;
-	sys_thread_t tmp;
+	sys_thread_t id;
 
-	err = create_kernel_task(&tmp, thread, arg, prio);
-	LWIP_DEBUGF(SYS_DEBUG, ("sys_thread_new: create_kernel_task %d, id = %u\n", err, tmp));
+	LWIP_UNUSED_ARG(name);
+	LWIP_UNUSED_ARG(stacksize);
 
-	return tmp;
+	err = create_kernel_task(&id, (entry_point_t)thread, arg, prio);
+	LWIP_DEBUGF(SYS_DEBUG, ("sys_thread_new: create_kernel_task %d, id = %u\n", err, id));
+
+	return id;
 }
 
 /* sys_sem_free(): destroy's given semaphore