Index: kernel/test/thread/thread1.c
===================================================================
--- kernel/test/thread/thread1.c	(revision a000878c0dee83a08f032207ffd800c201fca95b)
+++ kernel/test/thread/thread1.c	(revision 6fe0bf8de5aa2032128982d03e2f8b3240b3e508)
@@ -76,5 +76,5 @@
 	atomic_set(&finish, 0);
 	while (atomic_get(&threads_finished) < total) {
-		TPRINTF("Threads left: %d\n", total - atomic_get(&threads_finished));
+		TPRINTF("Threads left: %" PRIua "\n", total - atomic_get(&threads_finished));
 		thread_sleep(1);
 	}